Filings by year

F04B 1/205: granted patents and published applications per publication year
YearGranted patentsPublished applications
197820
197910
198010
198100
198200
198300
198400
198500
198600
198700
198800
198900
199000
199100
199220
199300
199400
199510
199600
199700
199800
199900
200000
200100
200200
200333
200400
200502
200600
200700
200800
200901
201000
201100
201200
201301
201401
201510
201610
201702
201800
201920
202002
202110
202201

By publication year. Applications have been published since 2001.