Filings by year

G01C 19/66: granted patents and published applications per publication year
YearGranted patentsPublished applications
197640
197760
197880
197960
198090
1981130
1982110
1983120
1984140
1985190
1986170
1987340
1988170
1989380
1990170
1991210
1992270
1993160
1994430
1995390
1996110
199750
1998100
1999100
200070
200191
20021411
2003155
200487
200531
2006314
200744
20081114
2009105
201056
201149
201245
20131010
201445
2015914
201689
2017159
201817
2019124
2020710
20211310
20221211
202369
202458
2025128
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