Patent Explorer
Browse, filter, and analyze 69 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2326388A | Impulse transmitting device | Associated Electric Laboratories Inc | Expired / Lapsed | 1940-11-02 | 1943-08-10 | 1960-11-02 | 0.0 yrs | 0 | |
| US2301337A | Testing and indicating apparatus | Associated Electric Laboratories Inc | Expired / Lapsed | 1940-11-16 | 1942-11-10 | 1960-11-16 | 0.0 yrs | 0 | |
| US2297365A | Telephone system | Associated Electric Laboratories Inc | Expired / Lapsed | 1939-07-08 | 1942-09-29 | 1959-07-08 | 0.0 yrs | 0 | |
| US2294863A | Electrical storage and delay circuits | Associated Electric Laboratories Inc | Expired / Lapsed | 1941-03-29 | 1942-09-01 | 1961-03-29 | 0.0 yrs | 0 | |
| US2289896A | Telephone system | Associated Electric Laboratories Inc | Expired / Lapsed | 1940-04-11 | 1942-07-14 | 1960-04-11 | 0.0 yrs | 0 | |
| US2288789A | Telephone system | Associated Electric Laboratories Inc | Expired / Lapsed | 1940-03-29 | 1942-07-07 | 1960-03-29 | 0.0 yrs | 0 | |
| US2282405A | Transmission system | Associated Electric Laboratories Inc | Expired / Lapsed | 1939-08-14 | 1942-05-12 | 1959-08-14 | 0.0 yrs | 0 | |
| US2282131A | Electrical signaling system | Associated Electric Laboratories Inc | Expired / Lapsed | 1940-11-18 | 1942-05-05 | 1960-11-18 | 0.0 yrs | 0 | |
| US2277280A | Hand telephone mounting | Associated Electric Laboratories Inc | Expired / Lapsed | 1940-08-31 | 1942-03-24 | 1960-08-31 | 0.0 yrs | 0 | |
| US2277296A | Hand telephone mounting | Associated Electric Laboratories Inc | Expired / Lapsed | 1940-09-05 | 1942-03-24 | 1960-09-05 | 0.0 yrs | 0 | |
| US2275147A | Carrier current system | Associated Electric Laboratories Inc | Expired / Lapsed | 1940-04-22 | 1942-03-03 | 1960-04-22 | 0.0 yrs | 0 | |
| US2274715A | Calling apparatus | Associated Electric Laboratories Inc | Expired / Lapsed | 1939-06-30 | 1942-03-03 | 1959-06-30 | 0.0 yrs | 0 | |
| US2275146A | Carrier current control system | Associated Electric Laboratories Inc | Expired / Lapsed | 1939-04-01 | 1942-03-03 | 1959-04-01 | 0.0 yrs | 0 | |
| US2272475A | Telephone system | Associated Electric Laboratories Inc | Expired / Lapsed | 1939-06-12 | 1942-02-10 | 1959-06-12 | 0.0 yrs | 0 | |
| US2264197A | Thermionic amplifier | Associated Electric Laboratories Inc | Expired / Lapsed | 1940-05-17 | 1941-11-25 | 1960-05-17 | 0.0 yrs | 0 | |
| US2248937A | Transmitting and receiving system | Associated Electric Laboratories Inc | Expired / Lapsed | 1929-07-15 | 1941-07-15 | 1949-07-15 | 0.0 yrs | 0 | |
| US2241105A | Sound translating device | Associated Electric Laboratories Inc | Expired / Lapsed | 1938-05-24 | 1941-05-06 | 1958-05-24 | 0.0 yrs | 0 | |
| US2234684A | Stock quotation system | Associated Electric Laboratories Inc | Expired / Lapsed | 1939-02-01 | 1941-03-11 | 1959-02-01 | 0.0 yrs | 0 | |
| US2222131A | Automatic switching system | Associated Electric Laboratories Inc | Expired / Lapsed | 1938-07-05 | 1940-11-19 | 1958-07-05 | 0.0 yrs | 0 | |
| US2215860A | Mounting for hand telephones | Associated Electric Laboratories Inc | Expired / Lapsed | 1939-04-14 | 1940-09-24 | 1959-04-14 | 0.0 yrs | 0 |
Showing 1 to 20 of 69 patents
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