General Telephone Laboratories Inc
General TeActive Patents
0
Total Holdings
19
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2938955A | Impulse correcting repeater | Expired / Lapsed | 1956-10-16 | 1960-05-31 | 0 | Details |
| US2939018A | Transistor trigger circuit | Expired / Lapsed | 1955-12-09 | 1960-05-31 | 0 | Details |
| US2917582A | Toll ticketing system remote operator trunk | Expired / Lapsed | 1958-03-14 | 1959-12-15 | 0 | Details |
| US2900606A | Transistor multivibrator | Expired / Lapsed | 1956-08-01 | 1959-08-18 | 0 | Details |
| US2895012A | All trunk busy detection circuit | Expired / Lapsed | 1957-05-28 | 1959-07-14 | 0 | Details |
| US2894799A | High speed recorder system | Expired / Lapsed | 1956-08-23 | 1959-07-14 | 0 | Details |
| US2885477A | Exclusion arrangement for loudspeaking telephone systems | Expired / Lapsed | 1956-10-08 | 1959-05-05 | 0 | Details |
| US2880295A | Silicon carbide resistor mounting | Expired / Lapsed | 1957-05-10 | 1959-03-31 | 0 | Details |
| US2857470A | Transistor line identifier | Expired / Lapsed | 1956-05-02 | 1958-10-21 | 0 | Details |
| US2854516A | Electronic telephone system | Expired / Lapsed | 1955-11-23 | 1958-09-30 | 0 | Details |
| US2824295A | Annunciator system | Expired / Lapsed | 1956-02-13 | 1958-02-18 | 0 | Details |
| US2820866A | Relay | Expired / Lapsed | 1953-11-20 | 1958-01-21 | 0 | Details |
| US2817074A | Alarm system | Expired / Lapsed | 1956-02-17 | 1957-12-17 | 0 | Details |
| US2805283A | Automatic telegraph switching system | Expired / Lapsed | 1951-12-10 | 1957-09-03 | 0 | Details |
| US2803192A | Electrical control system | Expired / Lapsed | 1953-03-09 | 1957-08-20 | 0 | Details |
| US2802627A | Preset counter for weaving machine | Expired / Lapsed | 1954-12-31 | 1957-08-13 | 0 | Details |
| US2798119A | Cross-bar type, impulse responsive, telephone switching app… | Expired / Lapsed | 1953-08-13 | 1957-07-02 | 0 | Details |
| US2794972A | Selective signalling system | Expired / Lapsed | 1952-11-05 | 1957-06-04 | 0 | Details |
| US2794070A | Tape perforating machines for toll ticketing telephone syst… | Expired / Lapsed | 1951-01-22 | 1957-05-28 | 0 | Details |