RADIO INVENTIONS Inc
RADIO INVEActive Patents
0
Total Holdings
15
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2239489A | Facsimile apparatus | Expired / Lapsed | 1938-12-21 | 1941-04-22 | 0 | Details |
| US2202855A | Facsimile recorder | Expired / Lapsed | 1938-09-14 | 1940-06-04 | 0 | Details |
| US2173113A | Means and method for facsimile recording | Expired / Lapsed | 1936-09-25 | 1939-09-19 | 0 | Details |
| US2149292A | Facsimile system | Expired / Lapsed | 1934-06-16 | 1939-03-07 | 0 | Details |
| US2114572A | Cathode ray ture system | Expired / Lapsed | 1936-06-01 | 1938-04-19 | 0 | Details |
| US2111776A | Recording paper system | Expired / Lapsed | 1936-06-05 | 1938-03-22 | 0 | Details |
| US2013331A | Radio receiving apparatus | Expired / Lapsed | 1932-03-31 | 1935-09-03 | 0 | Details |
| US2000694A | Television system | Expired / Lapsed | 1932-03-16 | 1935-05-07 | 0 | Details |
| US1894944A | Television apparatus and method | Expired / Lapsed | 1930-02-04 | 1933-01-24 | 0 | Details |
| US1855933A | Acoustical instrument | Expired / Lapsed | 1927-04-07 | 1932-04-26 | 0 | Details |
| US1839522A | Socket for vacuum tubes | Expired / Lapsed | 1926-03-22 | 1932-01-05 | 0 | Details |
| US1839633A | Electron tube socket | Expired / Lapsed | 1925-12-02 | 1932-01-05 | 0 | Details |
| US1822841A | Magnetic pick up | Expired / Lapsed | 1927-04-07 | 1931-09-08 | 0 | Details |
| US1815023A | Amplifier coupling | Expired / Lapsed | 1927-02-19 | 1931-07-14 | 0 | Details |
| US1808726A | Audio frequency coupling | Expired / Lapsed | 1928-05-09 | 1931-06-02 | 0 | Details |