Edward F. Schaefer
4Patents
4h-index
5Co-inventors
36Inventor score
Filing activity: Feb 27, 1978 → Feb 10, 1982
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4372658A | Pipeline inspection apparatus | Physics | 31 | Expired |
| US4249810A | Pipeline inspection apparatus | Physics | 15 | Expired |
| US4434427A | Atmosphere control for photographic pipeline inspection | Physics | 12 | Expired |
| US4363545A | Photographic pipeline inspection apparatus including an optical port wiper | Physics | 10 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.