Submarine Signal Co
SubmarineActive Patents
0
Total Holdings
6
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2143035A | Distance measuring apparatus | Expired / Lapsed | 1935-09-30 | 1939-01-10 | 0 | Details |
| US2138036A | Compressional wave sender or receiver | Expired / Lapsed | 1933-09-09 | 1938-11-29 | 0 | Details |
| US2088588A | System for geological explorations | Expired / Lapsed | 1935-07-18 | 1937-08-03 | 0 | Details |
| US1924156A | Means and method of measuring distance | Expired / Lapsed | 1930-05-19 | 1933-08-29 | 0 | Details |
| US1924174A | Means and method of measuring distance | Expired / Lapsed | 1930-05-19 | 1933-08-29 | 0 | Details |
| US1677945A | Method and apparatus for sound transmission | Expired / Lapsed | 1924-06-20 | 1928-07-24 | 0 | Details |