Filings by year

F02M 31/145: granted patents and published applications per publication year
YearGranted patentsPublished applications
197710
197800
197900
198000
198100
198200
198300
198400
198500
198600
198710
198800
198910
199000
199100
199210
199300
199400
199500
199600
199700
199800
199900
200000
200100
200210
200301
200410
200501
200611
200701
200802
200910
201013
201110
201202
201311
201410
201510
201614
201721
201821
201900
202001
202111
202210

By publication year. Applications have been published since 2001.

Recent patents

Most cited

By later US patents