Filings by year

F02M 31/081: granted patents and published applications per publication year
YearGranted patentsPublished applications
198610
198700
198800
198910
199000
199100
199200
199300
199400
199500
199600
199700
199800
199900
200000
200100
200200
200300
200401
200510

By publication year. Applications have been published since 2001.