Patent Explorer
Browse, filter, and analyze 6 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2173113A | Means and method for facsimile recording | RADIO INVENTIONS Inc | Expired / Lapsed | 1936-09-25 | 1939-09-19 | 1956-09-25 | 0.0 yrs | 0 | |
| US2149292A | Facsimile system | RADIO INVENTIONS Inc | Expired / Lapsed | 1934-06-16 | 1939-03-07 | 1954-06-16 | 0.0 yrs | 0 | |
| US2013331A | Radio receiving apparatus | RADIO INVENTIONS Inc | Expired / Lapsed | 1932-03-31 | 1935-09-03 | 1952-03-31 | 0.0 yrs | 0 | |
| US1855933A | Acoustical instrument | RADIO INVENTIONS Inc | Expired / Lapsed | 1927-04-07 | 1932-04-26 | 1947-04-07 | 0.0 yrs | 0 | |
| US1839522A | Socket for vacuum tubes | RADIO INVENTIONS Inc | Expired / Lapsed | 1926-03-22 | 1932-01-05 | 1946-03-22 | 0.0 yrs | 0 | |
| US1808726A | Audio frequency coupling | RADIO INVENTIONS Inc | Expired / Lapsed | 1928-05-09 | 1931-06-02 | 1948-05-09 | 0.0 yrs | 0 |