Filings by year

G01C 19/661: granted patents and published applications per publication year
YearGranted patentsPublished applications
197710
197820
197940
198010
198140
198230
198340
198430
198570
198690
1987190
1988100
1989270
1990100
1991120
1992170
1993100
1994270
1995250
199650
199710
199850
199930
200030
200140
200254
200354
200446
200531
200637
200710
200858
200950
201004
201122
201223
201338
201424
201569
201668
2017146
201804
201994
202059
2021118
20221110
202358
202455
202595
202653

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

Subgroups

Granted patents

Recent patents

Most cited

By later US patents