Rollei of America Inc
Rollei ofActive Patents
0
Total Holdings
8
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3706911A | Correct exposure annunciator circuit | Expired / Lapsed | 1971-01-28 | 1972-12-19 | 26 | Details |
| US3581181A | Servomotor driving and braking circuit | Expired / Lapsed | 1968-09-13 | 1971-05-25 | 7 | Details |
| US3350604A | Flash lamp controlled by photosensitive light integrating d… | Expired / Lapsed | 1965-06-01 | 1967-10-31 | 0 | Details |
| US3249006A | Automatic focusing photographic projector | Expired / Lapsed | 1964-04-14 | 1966-05-03 | 2 | Details |
| US3249007A | Automatic focusing photographic projector | Expired / Lapsed | 1964-03-26 | 1966-05-03 | 2 | Details |
| US3248605A | Capacitor charge monitoring and controlling apparatus | Expired / Lapsed | 1962-08-27 | 1966-04-26 | 2 | Details |
| US3229158A | Electronic photographic flash apparatus with photosensitive… | Expired / Lapsed | 1962-02-21 | 1966-01-11 | 2 | Details |
| US3033988A | Method of and apparatus for the control of electric impulses | Expired / Lapsed | 1957-04-05 | 1962-05-08 | 0 | Details |