Hellmuth Etzold
1Patents
1h-index
1Co-inventors
22Inventor score
Filing activity: Oct 29, 1974 → Oct 29, 1974
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3997020A | Sound absorber | Mechanical Engineering; Lighting; Heating | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.