Filings by year

G09B 9/40: granted patents and published applications per publication year
YearGranted patentsPublished applications
197710
197830
197910
198010
198110
198200
198310
198410
198500
198600
198720
198800
198910
199010
199100
199220
199300
199400
199530
199610
199700
199810
199900
200000
200100
200200
200300
200400
200511
200600
200701
200801
200902
201010
201100
201202
201300
201421
201510
201600
201701
201800
201921
202011
202100
202200
202300
202400
202501

By publication year. Applications have been published since 2001.

Recent patents

Most cited

By later US patents