Charles Smith
5Patents
1h-index
6Co-inventors
44Inventor score
Filing activity: Dec 20, 1974 → Oct 13, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3992979A | Hydraulic actuating arrangements | Mechanical Engineering; Lighting; Heating | 33 | Expired |
| US5103109A | Ground-loop interruption circuit | Physics | 1 | Expired |
| US12281720B2 | Spool valve actuator | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10876651B2 | Lighted municipal valve key | Fixed Constructions | 0 | Active |
| US12013055B2 | Lighted municipal valve key | Fixed Constructions | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.