McGraw Edison Co
McGraw EdiActive Patents
0
Total Holdings
20
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 |
| 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 |
| 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 |
| US3234493A | Distribution transformer having a molded insulative casing … | Expired / Lapsed | 1963-06-17 | 1966-02-08 | 2 | Details |
| US3199020A | Voltage control device | Expired / Lapsed | 1961-07-05 | 1965-08-03 | 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 |
| US3099827A | Transistor indicator circuit | Expired / Lapsed | 1958-04-14 | 1963-07-30 | 2 | 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 |
| 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 |
| US2947844A | Positive temperature coefficient semiconductor device | Expired / Lapsed | 1958-03-24 | 1960-08-02 | 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 |
| US2827514A | Stereophonic reception | Expired / Lapsed | 1955-05-19 | 1958-03-18 | 0 | Details |
| US2801793A | Fan blade | Expired / Lapsed | 1955-07-21 | 1957-08-06 | 0 | Details |