Filings by year

F01B 7/04: granted patents and published applications per publication year
YearGranted patentsPublished applications
197820
197910
198020
198120
198220
198330
198410
198510
198610
198720
198800
198960
199020
199100
199210
199310
199400
199510
199600
199710
199830
199910
200010
200120
200200
200300
200402
200512
200601
200730
200802
200913
201001
201104
2012211
201349
2014116
201551
201653
201721
201811
201923
202001
202110
202220
202311
202410
202501

By publication year. Applications have been published since 2001.

Subgroups

Granted patents