Librascope Inc
LibrascopeActive Patents
0
Total Holdings
9
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2917732A | Detector for indicating presence of objects | Expired / Lapsed | 1957-03-22 | 1959-12-15 | 0 | Details |
| US2873441A | Converter | Expired / Lapsed | 1955-02-18 | 1959-02-10 | 0 | Details |
| US2846594A | Ring counter | Expired / Lapsed | 1956-03-29 | 1958-08-05 | 0 | Details |
| US2846667A | Magnetic pulse controlling device | Expired / Lapsed | 1954-05-17 | 1958-08-05 | 0 | Details |
| US2832945A | Method and apparatus for comparing relative conditions of m… | Expired / Lapsed | 1952-01-26 | 1958-04-29 | 0 | Details |
| US2808578A | Memory systems | Expired / Lapsed | 1951-03-16 | 1957-10-01 | 0 | Details |
| US2805408A | Magnetic permanent storage | Expired / Lapsed | 1955-04-28 | 1957-09-03 | 0 | Details |
| US2675291A | Recording mechanism | Expired / Lapsed | 1951-03-02 | 1954-04-13 | 0 | Details |
| US2576903A | Electrical switching mechanism | Expired / Lapsed | 1950-03-04 | 1951-11-27 | 0 | Details |