Ewald Hald
4Patents
4h-index
6Co-inventors
43Inventor score
Filing activity: Jan 13, 1986 → Sep 2, 1999
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4779687A | Electric tool with source of power independent of the line | Performing Operations; Transporting | 83 | Expired |
| US4655103A | Clutch for power screwdrivers | Mechanical Engineering; Lighting; Heating | 64 | Expired |
| US6173792A | Power-driven screwdriver with torque-dependent release clutch | Performing Operations; Transporting | 18 | Expired |
| US4923047A | Machine with variable torque setting | Mechanical Engineering; Lighting; Heating | 11 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.