Sierra Engineering Co
Sierra EngActive Patents
0
Total Holdings
6
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| CA666090A | Surgical t tube | Expired / Lapsed | — | 1963-07-02 | 0 | Details |
| US2991787A | Tracheotomy instrument | Expired / Lapsed | 1957-04-11 | 1961-07-11 | 0 | Details |
| US2928387A | Quick donning mask assembly | Expired / Lapsed | 1958-09-08 | 1960-03-15 | 0 | Details |
| US2922420A | Epidural needle | Expired / Lapsed | 1957-11-29 | 1960-01-26 | 0 | Details |
| US2908269A | Endotracheal tube holder and bite block | Expired / Lapsed | 1958-03-24 | 1959-10-13 | 0 | Details |
| US2865374A | Tracheotomy instrument | Expired / Lapsed | 1957-09-16 | 1958-12-23 | 0 | Details |