Farnsworth Research Corp
FarnsworthActive Patents
0
Total Holdings
30
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2685687A | Impulse generator for time indication | Expired / Lapsed | 1948-04-27 | 1954-08-03 | 0 | Details |
| US2641694A | Pulse counter | Expired / Lapsed | 1946-04-27 | 1953-06-09 | 0 | Details |
| US2603418A | Electronic indicator tube | Expired / Lapsed | 1946-12-07 | 1952-07-15 | 0 | Details |
| US2586854A | Printed circuit construction | Expired / Lapsed | 1947-04-19 | 1952-02-26 | 0 | Details |
| US2557974A | Light modulation system | Expired / Lapsed | 1945-08-13 | 1951-06-26 | 0 | Details |
| US2543066A | Automatic picture phasing circuit | Expired / Lapsed | 1947-02-01 | 1951-02-27 | 0 | Details |
| US2541050A | Cathode-pulsing communication system | Expired / Lapsed | 1945-05-10 | 1951-02-13 | 0 | Details |
| US2527523A | Frequency control system | Expired / Lapsed | 1944-08-11 | 1950-10-31 | 0 | Details |
| US2523315A | Selective calling system | Expired / Lapsed | 1947-06-06 | 1950-09-26 | 0 | Details |
| US2510093A | Stroboscopic telemetering apparatus | Expired / Lapsed | 1947-02-17 | 1950-06-06 | 0 | Details |
| US2510106A | Catoptric television projector having tube screen and objec… | Expired / Lapsed | 1946-05-31 | 1950-06-06 | 0 | Details |
| US2495684A | Multivibrator | Expired / Lapsed | 1945-06-02 | 1950-01-31 | 0 | Details |
| US2492989A | Directive ultra high frequency antenna | Expired / Lapsed | 1946-02-09 | 1950-01-03 | 0 | Details |
| US2489262A | Phase comparator circuit | Expired / Lapsed | 1947-02-01 | 1949-11-29 | 0 | Details |
| US2489329A | Deflection modulation tube | Expired / Lapsed | 1947-01-20 | 1949-11-29 | 0 | Details |
| US2485594A | Waveform compensating circuit for television film transmitt… | Expired / Lapsed | 1946-04-15 | 1949-10-25 | 0 | Details |
| US2473031A | Electron multiplier for ultra high frequencies | Expired / Lapsed | 1945-04-14 | 1949-06-14 | 0 | Details |
| US2472779A | Cathode-ray tube amplifier | Expired / Lapsed | 1947-02-17 | 1949-06-07 | 0 | Details |
| US2472727A | Voltage distribution system | Expired / Lapsed | 1946-11-27 | 1949-06-07 | 0 | Details |
| US2472774A | Irregular interlace scanning system | Expired / Lapsed | 1945-10-17 | 1949-06-07 | 0 | Details |
| US2467476A | Frequency divider circuit | Expired / Lapsed | 1945-10-17 | 1949-04-19 | 0 | Details |
| US2467465A | Electronic saw-tooth voltage generator | Expired / Lapsed | 1943-01-09 | 1949-04-19 | 0 | Details |
| US2459699A | Synchronizing system | Expired / Lapsed | 1946-02-01 | 1949-01-18 | 0 | Details |
| US2459778A | Image dissector | Expired / Lapsed | 1945-07-09 | 1949-01-18 | 0 | Details |
| US2459723A | Pulse and square wave generator | Expired / Lapsed | 1944-08-26 | 1949-01-18 | 0 | Details |
| US2445562A | Panoramic receiving system | Expired / Lapsed | 1943-02-25 | 1948-07-20 | 0 | Details |
| US2442304A | Pulse keying circuit | Expired / Lapsed | 1944-01-17 | 1948-05-25 | 0 | Details |
| US2440736A | Image analyzing tube | Expired / Lapsed | 1947-08-16 | 1948-05-04 | 0 | Details |
| US2437418A | Television image tube | Expired / Lapsed | 1945-05-11 | 1948-03-09 | 0 | Details |
| US2431510A | Photocell multiplier apparatus | Expired / Lapsed | 1944-09-29 | 1947-11-25 | 0 | Details |