DAPHNE INVEST TRUST
DAPHNE INVActive Patents
0
Total Holdings
5
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2562665A | Movement control device for magnetic sound heads on sound r… | Expired / Lapsed | 1948-02-27 | 1951-07-31 | 0 | Details |
| US2542192A | Device for the remote control of electrical circuits | Expired / Lapsed | 1948-02-27 | 1951-02-20 | 0 | Details |
| US2537407A | Method of and arrangement for the coded remote setting in o… | Expired / Lapsed | 1947-07-29 | 1951-01-09 | 0 | Details |
| US2519592A | Device for the magnetic recording on, and reproducing from,… | Expired / Lapsed | 1948-02-27 | 1950-08-22 | 0 | Details |
| US2519568A | Method of operating telephonographs | Expired / Lapsed | 1948-02-27 | 1950-08-22 | 0 | Details |