Patent Explorer
Browse, filter, and analyze 2 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2390500A | Low volume sinkhead | Ferro Engineering Co | Expired / Lapsed | 1942-07-30 | 1945-12-11 | 1962-07-30 | 0.0 yrs | 0 | |
| US2341589A | Hot top | Ferro Engineering Co | Expired / Lapsed | 1942-07-30 | 1944-02-15 | 1962-07-30 | 0.0 yrs | 0 |