Filings by year

E01C 19/1027: granted patents and published applications per publication year
YearGranted patentsPublished applications
197650
197730
1978140
197980
1980110
198170
198270
198340
198460
198550
198640
198740
198820
198930
199080
199160
199230
199380
1994100
1995100
1996100
199740
199840
199910
200030
200140
200242
200322
200431
200502
200611
200703
200814
200921
201020
201121
201257
201333
201434
201533
201645
201734
201822
201955
202013
202133
202223
202326
202423
202512

By publication year. Applications have been published since 2001.

Subgroups

Granted patents

Recent patents

Most cited

By later US patents