Rolf Speier
3Patents
2h-index
3Co-inventors
41Inventor score
Filing activity: Dec 13, 1977 → May 18, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7330310B2 | Focusing device with diopter adjustment | Physics | 19 | Expired |
| US4130353A | Projector with controls for the slide changer | Physics | 2 | Expired |
| US7050226B2 | Play-free rotary mounting | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.