Henry F. Berdat
7Patents
4h-index
4Co-inventors
46Inventor score
Filing activity: Dec 27, 1977 → Mar 8, 1989
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4435055A | Multiple frequency ranging apparatus for focus control | Physics | 10 | Expired |
| US4654562A | Flashing lamp unit | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4170745A | Lamp flashing circuit for line generating photoexposure device | Electricity | 5 | Expired |
| US4841316A | Photohead system for positioning an aperture wheel and method of making an aperture disc | Performing Operations; Transporting | 4 | Expired |
| US4343540A | Plotting apparatus and method utilizing encoded optical means | Physics | 3 | Expired |
| US4940641A | Aperture disc and method of making the same | Performing Operations; Transporting | 1 | Expired |
| US4849777A | Lamp driver scheme | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.