Filings by year

G04B 19/25313: granted patents and published applications per publication year
YearGranted patentsPublished applications
198010
198100
198200
198300
198410
198510
198600
198700
198800
198900
199000
199100
199200
199300
199400
199500
199600
199700
199800
199900
200000
200100
200200
200300
200400
200501
200600
200710
200800
200900
201000
201100
201200
201301
201400
201510
201611
201700
201801
201910
202001
202101
202212
202310
202420
202501
202601

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

Subgroups

Granted patents

Recent patents

Most cited

By later US patents