McGraw Edison Co
McGraw EdiActive Patents
0
Total Holdings
46
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3829835A | Multi-signal encoder and transponder | Expired / Lapsed | 1972-09-20 | 1974-08-13 | 12 | Details |
| US3675237A | Code transmitter having intermittent drive mechanism | Expired / Lapsed | 1970-03-02 | 1972-07-04 | 21 | Details |
| US3668509A | Power supply system for and method of energizing multiple l… | Expired / Lapsed | 1971-02-11 | 1972-06-06 | 13 | Details |
| US3609754A | Position-encoding device with frequency coded output signals | Expired / Lapsed | 1969-03-17 | 1971-09-28 | 15 | Details |
| US3491244A | Radiation sensitive position encoder using coded discs | Expired / Lapsed | 1967-12-15 | 1970-01-20 | 0 | Details |
| US3309571A | Repeating circuit interrupter having reset control means re… | Expired / Lapsed | 1964-03-09 | 1967-03-14 | 2 | Details |
| US3294974A | Photo-control device employing thermal relay | Expired / Lapsed | 1964-01-22 | 1966-12-27 | 1 | Details |
| US3286077A | Heat-zoned press head | Expired / Lapsed | 1964-11-23 | 1966-11-15 | 2 | Details |
| US3269754A | Internal plastic coupling | Expired / Lapsed | 1964-03-02 | 1966-08-30 | 2 | Details |
| US3243552A | Current limiting fuse | Expired / Lapsed | 1964-09-08 | 1966-03-29 | 1 | Details |
| US3234493A | Distribution transformer having a molded insulative casing … | Expired / Lapsed | 1963-06-17 | 1966-02-08 | 2 | Details |
| US3228714A | Re-usable type snap-on couplings | Expired / Lapsed | 1962-08-06 | 1966-01-11 | 2 | Details |
| US3199020A | Voltage control device | Expired / Lapsed | 1961-07-05 | 1965-08-03 | 2 | Details |
| US3170635A | Luminaire assembly | Expired / Lapsed | 1962-08-15 | 1965-02-23 | 2 | Details |
| US3167686A | Electronic time delay devices | Expired / Lapsed | 1961-10-05 | 1965-01-26 | 2 | Details |
| US3128412A | Photosensitive bistable switching circuit | Expired / Lapsed | 1959-05-25 | 1964-04-07 | 0 | Details |
| US3111606A | Lightning arrester isolator devices | Expired / Lapsed | 1960-07-08 | 1963-11-19 | 2 | Details |
| US3104287A | Telephone calling equipment | Expired / Lapsed | 1962-08-06 | 1963-09-17 | 2 | Details |
| US3100854A | Repeating circuit interrupter | Expired / Lapsed | 1961-09-06 | 1963-08-13 | 1 | Details |
| US3099827A | Transistor indicator circuit | Expired / Lapsed | 1958-04-14 | 1963-07-30 | 2 | Details |
| US3070770A | Electrical contacts | Expired / Lapsed | 1959-12-21 | 1962-12-25 | 0 | Details |
| US3061700A | Protectors for electric circuits | Expired / Lapsed | 1959-07-24 | 1962-10-30 | 0 | Details |
| US3059092A | Beverage brewing device | Expired / Lapsed | 1959-12-04 | 1962-10-16 | 0 | Details |
| US3058160A | Methods for making preformed insulation for stationary indu… | Expired / Lapsed | 1957-11-08 | 1962-10-16 | 0 | Details |
| US3043989A | Reclosing circuit breaker control system | Expired / Lapsed | 1958-11-28 | 1962-07-10 | 0 | Details |
| US2990514A | Production line impulse testing apparatus | Expired / Lapsed | 1958-09-11 | 1961-06-27 | 0 | Details |
| US2978545A | Magnetic playback heads | Expired / Lapsed | 1956-10-15 | 1961-04-04 | 0 | Details |
| US2966372A | Drive fittings for pipe or conduit | Expired / Lapsed | 1956-05-18 | 1960-12-27 | 0 | Details |
| US2961594A | System of regulation | Expired / Lapsed | 1957-07-15 | 1960-11-22 | 0 | Details |
| US2948837A | Solid state electronic switch and circuits therefor | Expired / Lapsed | 1956-09-04 | 1960-08-09 | 0 | Details |
| US2947844A | Positive temperature coefficient semiconductor device | Expired / Lapsed | 1958-03-24 | 1960-08-02 | 0 | Details |
| US2944152A | Fire detection | Expired / Lapsed | 1955-06-30 | 1960-07-05 | 0 | Details |
| US2941192A | Flame and overheat detecting system | Expired / Lapsed | 1957-09-20 | 1960-06-14 | 0 | Details |
| US2928048A | Electrical measuring system | Expired / Lapsed | 1956-08-27 | 1960-03-08 | 0 | Details |
| US2897485A | Heat detector for hydrocarbon flames | Expired / Lapsed | 1955-04-07 | 1959-07-28 | 0 | Details |
| US2889191A | Mounting of sheet records | Expired / Lapsed | 1954-11-12 | 1959-06-02 | 0 | Details |
| US2866855A | Dictating machines | Expired / Lapsed | 1957-01-22 | 1958-12-30 | 0 | Details |
| US2854549A | Protectors for electric circuits | Expired / Lapsed | 1953-11-09 | 1958-09-30 | 0 | Details |
| US2833866A | Voice-controlled dictation-recording system | Expired / Lapsed | 1956-07-12 | 1958-05-06 | 0 | Details |
| US2830256A | Voltage regulator | Expired / Lapsed | 1956-05-21 | 1958-04-08 | 0 | Details |
| US2829601A | Vibratory pump | Expired / Lapsed | 1953-12-09 | 1958-04-08 | 0 | Details |
| US2828390A | Protectors for electric circuits | Expired / Lapsed | 1953-09-24 | 1958-03-25 | 0 | Details |
| US2827514A | Stereophonic reception | Expired / Lapsed | 1955-05-19 | 1958-03-18 | 0 | Details |
| US2816177A | Dictation recording machines and systems | Expired / Lapsed | 1955-10-14 | 1957-12-10 | 0 | Details |
| US2805272A | Cable-type thermocouple and circuit | Expired / Lapsed | 1955-06-27 | 1957-09-03 | 0 | Details |
| US2801793A | Fan blade | Expired / Lapsed | 1955-07-21 | 1957-08-06 | 0 | Details |