Subclass
Subgroup
Patent
G09B
5/065
12394327
7/00
12394328
7/02
12394329
9/05
12394330
15/06
12394331
17/003
12394332
19/06
12394333
21/009
12394334
23/286
12394335
23/32
12394336
G09F
3/02
12394337
3/0297
12394338
9/301
12394339
9/3026
12394340
21/048
12394341
21/049
12394342
G09G
3/035
12394343
3/20
12394344
12394345
12394346
3/2003
12394347
12394348
12394349
12394350
3/2007
12394351
12394352
3/2074
12394353
3/2092
12394354
12394355
12394356
12394357
3/2096
12394358
12394359
3/32
12394360
12394361
12394362
12394363
12394364
12394365
12394366
12394367
12394368
12394369
12394370
RE050539
3/3225
12394371
3/3233
12394372
12394373
12394374
12394375
12394376
12394377
12394378
12394379
3/3258
12394380
12394381
12394382
12394383
3/3266
12394384
12394385
3/3406
12394386
3/344
12394387
3/3446
12394388
3/3696
12394389
12394390
5/003
12394391
5/005
12394392
5/006
12394393
5/06
12394394
5/10
12394395