Filings by year

F02M 31/183: granted patents and published applications per publication year
YearGranted patentsPublished applications
197610
197710
197800
197900
198000
198100
198200
198300
198400
198500
198600
198700
198800
198900
199000
199110
199210
199300
199410
199500
199600
199700
199810
199900
200000
200110
200201
200301
200411
200536
200622
200711
200822
200900
201021
201100
201200
201301
201400
201511
201602
201717
201844
201942
202031
202122
202210
202323
202421
202511
202612

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

Recent patents

Most cited

By later US patents