Patent Explorer
Browse, filter, and analyze 4 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2431632A | Heater for high temperature reactions and conversions | Cities Service Oil Co | Expired / Lapsed | 1943-05-27 | 1947-11-25 | 1963-05-27 | 0.0 yrs | 0 | |
| US2423844A | Timepiece lubricant | Cities Service Oil Co | Expired / Lapsed | 1945-10-18 | 1947-07-15 | 1965-10-18 | 0.0 yrs | 0 | |
| US2362767A | Lubricants | Cities Service Oil Co | Expired / Lapsed | 1942-06-03 | 1944-11-14 | 1962-06-03 | 0.0 yrs | 0 | |
| US2243219A | Porous refractory and process of manufacture | Cities Service Oil Co | Expired / Lapsed | 1938-06-25 | 1941-05-27 | 1958-06-25 | 0.0 yrs | 0 |