Engineering Research Associates Inc
EngineerinActive Patents
0
Total Holdings
7
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2680239A | Data selection system | Expired / Lapsed | 1952-02-26 | 1954-06-01 | 0 | Details |
| US2677794A | Electrical condenser and process for its manufacture | Expired / Lapsed | 1949-03-25 | 1954-05-04 | 0 | Details |
| US2621560A | Means for eliminating interference between the optical trai… | Expired / Lapsed | 1949-11-17 | 1952-12-16 | 0 | Details |
| US2617705A | Data storage apparatus | Expired / Lapsed | 1948-03-25 | 1952-11-11 | 0 | Details |
| US2614169A | Storage and relay system | Expired / Lapsed | 1950-07-24 | 1952-10-14 | 0 | Details |
| US2553251A | Vibrating tool | Expired / Lapsed | 1948-04-02 | 1951-05-15 | 0 | Details |
| US2540654A | Data storage system | Expired / Lapsed | 1948-03-25 | 1951-02-06 | 0 | Details |