Filings by year

G09B 9/203: granted patents and published applications per publication year
YearGranted patentsPublished applications
199920
200000
200100
200202
200320
200400
200500
200600
200700
200800
200901
201000
201110
201200
201300
201400
201500
201612
201700
201800
201900
202000
202101
202210
202333
202410
202501

By publication year. Applications have been published since 2001.

Recent patents

Most cited

By later US patents