recovering a USB memory stick corrupted by Win7 improper dismount

--> sudo fsck /dev/sdb1
fsck from util-linux 2.28
fsck.fat 3.0.26 (2014-03-07)
0x41: Dirty bit is set. Fs was not properly unmounted and some data may be corrupt.
1) Remove dirty bit
2) No action
? 1

--> ps -ef | grep fsck
root      3298  1636  0 09:39 pts/0    00:00:00 sudo fsck /dev/sdb1
root      3299  3298  0 09:39 pts/0    00:00:00 fsck /dev/sdb1
root      3300  3299  0 09:39 pts/0    00:00:00 fsck.vfat /dev/sdb1


FATs differ but appear to be intact. Use which FAT ?
1) Use first FAT
2) Use second FAT
    ? 1
Invalid input.
? 2
Orphaned long file name part "journals.repair"
1: Delete.
2: Leave it.
? 1
/.Spotlight-V100/Store-V2/0D2AD312-A24B-4439-BFFE-90B141D16009/...
  Bad short file name ...
1) Drop file
2) Rename file
3) Auto-rename
4) Keep it
? 1
j#|δotlight-V100/Store-V2/0D2AD312-A24B-4439-BFFE-90B141D16009...
j#|δd short file name (...
1) Drop file
2) Rename file
3) Auto-rename
4) Keep it
? 1
/.Spotlight-V100/Store-V2/0D2AD312-A24B-4439-BFFE-90B141D16009/...
  Bad short file name ...
1) Drop file
2) Rename file
3) Auto-rename
4) Keep it
? 1
/.Spotlight-V100/Store-V2/0D2AD312-A24B-4439-BFFE-90B141D16009/∙...
  Bad short file name ...
1) Drop file
2) Rename file
3) Auto-rename
4) Keep it
? 
/.Spotlight-V100/Store-V2/0D2AD312-A24B-4439-BFFE-90B141D16009/...
  Start cluster beyond limit (519591349 > 1946618). Truncating file.
Reclaimed 228206 unused clusters (934731776 bytes).
Free cluster summary wrong (1682235 vs. really 1910724)
1) Correct
2) Don't correct
? 1
Leaving filesystem unchanged.
/dev/sdb1: 134 files, 35893/1946617 clusters
----------------------------------
--> mkdir tmp ; sudo mount /dev/sdb1 /home/luser/tmp ; df -h
mount: /dev/sdb1: can't read superblock
Filesystem      Size  Used Avail Use% Mounted on
----------------------------------
------------------------------------------------
--> sudo fsck -y /dev/sdb1
fsck from util-linux 2.28
fsck.fat 3.0.26 (2014-03-07)
0x41: Dirty bit is set. Fs was not properly unmounted and some data may be corrupt.
 Automatically removing dirty bit.
....
(REALLY TAKES A MICROSOFT SYSTEM TO SCREW UP A THUMB DRIVE!!! Win7 system..)
 this memory stick had been used on MacOSx, Win10, Linux and was corrupted by a Win7 system...
   fixing it on a linux system... maybe...  
....
Cluster 1806076 out of range (235157758 > 1946618). Setting to EOF.
Cluster 1806077 out of range (18346011 > 1946618). Setting to EOF.
/
  Contains a free cluster (1402296). Assuming EOF.
/.Spotlight-V100/Store-V2/0D2AD312-A24B-4439-BFFE-90B141D16009
  Contains a free cluster (752756). Assuming EOF.
Orphaned long file name part "journals.repair"
  Auto-deleting.
/.Spotlight-V100/Store-V2/0D2AD312-A24B-4439-BFFE-90B141D16009/PSID.DB
  Contains a free cluster (753941). Assuming EOF.
/.Spotlight-V100/Store-V2/0D2AD312-A24B-4439-BFFE-90B141D16009/PSID.DB
  File size is 20480 bytes, cluster chain length is 16384 bytes.
  Truncating file to 16384 bytes.
...
 taking a very long time... 
------------------------------------------------------------------------------
--> ps -ef | grep fsck

root      4322  1636  0 09:46 pts/0    00:00:00 sudo fsck -y /dev/sdb1
root      4323  4322  0 09:46 pts/0    00:00:00 fsck -y /dev/sdb1
root      4324  4323 97 09:46 pts/0    01:13:54 fsck.vfat -y /dev/sdb1
------------------------------------------------------------------------------
PID   USER  PR NI VIRT  RES   SHR  S %CPU   %MEM   TIME+      COMMAND
4324  root  20 0  48388 42492 1912 R 99.67  0.860  79:27.23   fsck.vfat
------------------------------------------------------------------------------
 more time passing... 
------------------------------------------------------------------------------
PID USER       PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+    COMMAND                                                                           
4324 root      20   0   48388  42492   1912 R 83.33 0.860     89:55.60 fsck.vfat                                                                     
------------------------------------------------------------------------------
 more time passing... 
------------------------------------------------------------------------------
------------------------------------------------
--> time sudo fsck -y /dev/sdb1
       
gave up...

 Truncating file to 16384 bytes.
^C
real    324m48.939s
user    320m49.522s
sys     1m30.750s

---------------------
--> mount --help

Usage:
 mount [-lhV]
 mount -a [options]
 mount [options] [--source]  | [--target] 
 mount [options]  
 mount   []

Mount a filesystem.

Options:
 -a, --all               mount all filesystems mentioned in fstab
 -c, --no-canonicalize   don't canonicalize paths
 -f, --fake              dry run; skip the mount(2) syscall
 -F, --fork              fork off for each device (use with -a)
 -T, --fstab       alternative file to /etc/fstab
 -i, --internal-only     don't call the mount. helpers
 -l, --show-labels       show also filesystem labels
 -n, --no-mtab           don't write to /etc/mtab
 -o, --options     comma-separated list of mount options
 -O, --test-opts   limit the set of filesystems (use with -a)
 -r, --read-only         mount the filesystem read-only (same as -o ro)
 -t, --types       limit the set of filesystem types
     --source       explicitly specifies source (path, label, uuid)
     --target    explicitly specifies mountpoint
 -v, --verbose           say what is being done
 -w, --rw, --read-write  mount the filesystem read-write (default)

 -h, --help     display this help and exit
 -V, --version  output version information and exit

Source:
 -L, --label      synonym for LABEL=
 -U, --uuid        synonym for UUID=
 LABEL=           specifies device by filesystem label
 UUID=             specifies device by filesystem UUID
 PARTLABEL=       specifies device by partition label
 PARTUUID=         specifies device by partition UUID
                 specifies device by path
              mountpoint for bind mounts (see --bind/rbind)
                   regular file for loopdev setup

Operations:
 -B, --bind              mount a subtree somewhere else (same as -o bind)
 -M, --move              move a subtree to some other place
 -R, --rbind             mount a subtree and all submounts somewhere else
 --make-shared           mark a subtree as shared
 --make-slave            mark a subtree as slave
 --make-private          mark a subtree as private
 --make-unbindable       mark a subtree as unbindable
 --make-rshared          recursively mark a whole subtree as shared
 --make-rslave           recursively mark a whole subtree as slave
 --make-rprivate         recursively mark a whole subtree as private
 --make-runbindable      recursively mark a whole subtree as unbindable

For more details see mount(8).
------------------------------------------------------------
--> sudo mount -r /dev/sdb1 /home/luser/tmp
mount: /dev/sdb1: can't read superblock
------------------------------------------------------------
--> sudo fsck -pyf /dev/sdb1
fsck from util-linux 2.28
fsck.fat 3.0.26 (2014-03-07)
0x41: Dirty bit is set. Fs was not properly unmounted and some data may be corrupt.
 Automatically removing dirty bit.

FATs differ but appear to be intact. Using first FAT.
/
  Contains a free cluster (1402296). Assuming EOF.
/.Spotlight-V100/Store-V2/0D2AD312-A24B-4439-BFFE-90B141D16009
  Contains a free cluster (752756). Assuming EOF.
Orphaned long file name part "journals.repair"
  Auto-deleting.
/.Spotlight-V100/Store-V2/0D2AD312-A24B-4439-BFFE-90B141D16009/PSID.DB
  Contains a free cluster (753941). Assuming EOF.
/.Spotlight-V100/Store-V2/0D2AD312-A24B-4439-BFFE-90B141D16009/PSID.DB
  File size is 20480 bytes, cluster chain length is 16384 bytes.
  Truncating file to 16384 bytes.
Reclaimed 830 unused clusters (3399680 bytes) in 3 chains.
Free cluster summary wrong (1682235 vs. really 1909898)
  Auto-correcting.
Performing changes.
/dev/sdb1: 102 files, 36719/1946617 clusters
------------------------------------------------
uh oh... NOT GOOD:

--> sudo mount /dev/sdb1 /home/luser/tmp
------------------------------------------------
--> ll tmp
total 3320
-rwxr-xr-x 1 root root  221184 Dec 31  1979 FSCK0000.REC
-rwxr-xr-x 1 root root    4096 Dec 31  1979 FSCK0001.REC
-rwxr-xr-x 1 root root 3174400 Dec 31  1979 FSCK0002.REC

THESE ARE NOT FILES...  :(
    microsoft win7 was the last system connected...

------------------------------------------------