Subclass
Subgroup
Patent
G03B
17/12
12169351
19/12
12169352
21/142
12169353
21/208
12169354
G03C
1/853
12169355
G03F
1/38
12169356
1/82
12169357
7/0002
12169358
7/001
12169359
7/0046
12169360
7/162
12169361
7/325
12169362
7/70516
12169363
7/70641
12169364
12169365
7/70683
12169366
7/70725
12169367
7/70775
12169368
7/70866
12169369
9/7088
12169370
G03G
9/09716
12169389
9/1139
12169390
15/0275
12169371
15/043
12169372
15/065
12169373
15/0822
12169374
15/0868
12169375
12169376
15/087
12169377
15/2053
12169378
15/5004
12169379
15/6552
12169380
15/80
12169381
21/1609
12169382
21/1633
12169383
12169384
21/1647
12169385
21/1814
12169386
21/206
12169387
12169388