Mitchell A. Hall
11Patents
5h-index
3Co-inventors
59Inventor score
Filing activity: Feb 27, 1974 → Jul 25, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4014424A | Device for testing the flatness, size and shape of coin-tokens | Physics | 41 | Expired |
| USD799988S1 | Watch | General | 11 | Active |
| USD792241S1 | Watch | General | 11 | Active |
| US4122695A | Lock head protector | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4549418A | Lock box and method of making same | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4977995A | Coin chute construction | Physics | 3 | Expired |
| US3951246A | Circuit-closing device actuated by a plurality of coins | Physics | 2 | Expired |
| US4799580A | Coin chute construction | Physics | 2 | Expired |
| US4640405A | Coin chute construction and method of making same | Physics | 2 | Expired |
| US3967713A | Slide actuator and means controlling movement of same between fully retracted and fully advanced positions | Physics | 1 | Expired |
| US3946849A | Coin-chute for testing the ferrous content, weight, and presence of an aperture in coins | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.