Patent Explorer
Browse, filter, and analyze 2 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US1985899A | Pipe slip joint | CALIFORNIA CORRUGATED CULVERT | Expired / Lapsed | 1932-08-03 | 1935-01-01 | 1952-08-03 | 0.0 yrs | 0 | |
| US1707433A | Automatic electric welding apparatus | CALIFORNIA CORRUGATED CULVERT | Expired / Lapsed | 1927-02-15 | 1929-04-02 | 1947-02-15 | 0.0 yrs | 0 |