Farrand Optical Co Inc
Farrand OpActive Patents
0
Total Holdings
11
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US4474501A | Optical simulation of scenic translation | Expired / Lapsed | 1982-07-01 | 1984-10-02 | 15 | Details |
| US3711826A | Instrument landing apparatus for aircraft | Expired / Lapsed | 1969-05-23 | 1973-01-16 | 4 | Details |
| US3565539A | Collimated sight | Expired / Lapsed | 1967-06-12 | 1971-02-23 | 0 | Details |
| US3518702A | Implantable body actuated artificial heart system | Expired / Lapsed | 1967-01-23 | 1970-07-07 | 0 | Details |
| US3443858A | Infinite optical image-forming apparatus | Expired / Lapsed | 1966-02-23 | 1969-05-13 | 2 | Details |
| US3432219A | Wide field optical viewer with concave mirror eyepiece | Expired / Lapsed | 1962-08-21 | 1969-03-11 | 2 | Details |
| US2688896A | Navigation instrument | Expired / Lapsed | 1950-04-20 | 1954-09-14 | 0 | Details |
| US2590906A | Reflection interference filter | Expired / Lapsed | 1946-11-22 | 1952-04-01 | 2 | Details |
| US2587451A | Slit control for spectroscopic apparatus | Expired / Lapsed | 1949-03-01 | 1952-02-26 | 0 | Details |
| US2571124A | Sphygmomanometer | Expired / Lapsed | 1946-10-02 | 1951-10-16 | 0 | Details |
| US2536866A | Reflex camera combination, including telephoto lens and tel… | Expired / Lapsed | 1947-01-16 | 1951-01-02 | 0 | Details |