Filings by year

E04H 6/185: granted patents and published applications per publication year
YearGranted patentsPublished applications
197620
197700
197810
197910
198000
198100
198200
198300
198400
198500
198600
198700
198810
198900
199000
199120
199210
199310
199430
199520
199610
199700
199810
199900
200010
200110
200200
200301
200413
200510
200601
200701
200801
200900
201011
201110
201200
201301
201400
201500
201601
201711
201810
201911
202010
202101
202222
202301
202410

By publication year. Applications have been published since 2001.

Subgroups

Granted patents

Recent patents

Most cited

By later US patents