Robert H. Schaefer
5Patents
4h-index
13Co-inventors
43Inventor score
Filing activity: Feb 14, 1975 → Jun 9, 1978
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4232798A | Automatic vending machine for delivering containers having edible product therein | Physics | 23 | Expired |
| US4235320A | Retarder and friction brakes | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US3961494A | Soft food mix dispensing apparatus and method | Human Necessities | 17 | Expired |
| US4075912A | Transmission with sump oil level responsive controls | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4082012A | Transmission and control with centrifugal dump valve | Mechanical Engineering; Lighting; Heating | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.