D04C 3/30

By controlling switches of guides or track plates

Official title: by controlling switches of guides or track plates

D04C3/30 (By controlling switches of guides or track plates) appears on 36 US grants and 28 published applications in this corpus.

Search patents in D04C
Granted patents
36
Published applications
28
Assignees
13
Inventors
43
Latest grant
11 Aug 2026

Filings by year

D04C 3/30: granted patents and published applications per publication year
YearGranted patentsPublished applications
197610
197700
197800
197900
198000
198100
198200
198300
198400
198500
198600
198700
198800
198900
199000
199100
199200
199310
199400
199520
199600
199700
199800
199900
200000
200130
200230
200312
200401
200510
200600
200700
200800
200902
201000
201120
201200
201301
201410
201501
201601
201711
201801
201926
202023
202121
202252
202332
202421
202513
202630

By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.