Welding Research Inc
Welding ReActive Patents
0
Total Holdings
6
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3112391A | Zeroing system for electron gun | Expired / Lapsed | 1961-10-27 | 1963-11-26 | 2 | Details |
| US2859399A | Control system | Expired / Lapsed | 1955-09-30 | 1958-11-04 | 0 | Details |
| US2803407A | Counting system including step-by-step devices providing pr… | Expired / Lapsed | 1952-07-30 | 1957-08-20 | 0 | Details |
| US2652197A | Predetermining system, including devices providing continuo… | Expired / Lapsed | 1949-01-28 | 1953-09-15 | 0 | Details |
| US2600519A | Sequence control circuit and timer | Expired / Lapsed | 1948-06-22 | 1952-06-17 | 0 | Details |
| US2431083A | Electric valve converting system | Expired / Lapsed | 1944-09-01 | 1947-11-18 | 0 | Details |