Wallace Clark
13Patents
7h-index
1Co-inventors
52Inventor score
Filing activity: Sep 9, 1974 → Mar 15, 1991
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5133016A | Hearing aid with replaceable drying agent | Electricity | 33 | Expired |
| US4187918A | Down-hole earth drilling motor capable of free circulation | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4059165A | Versatile fluid motor and pump | Fixed Constructions | 15 | Expired |
| US3932072A | Moineau pump with rotating outer member | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4339007A | Progressing cavity motor governing system | Fixed Constructions | 8 | Expired |
| US4311443A | Motor/pump transmission construction for a Moineau type apparatus | Emerging Cross-Sectional Technologies | 8 | Expired |
| US3951097A | Hydraulic motor or pump | Performing Operations; Transporting | 7 | Expired |
| US4320929A | Sealed bearing system for hydraulically operated devices | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US4912759A | Device for selectively depressing a telephone switch | Electricity | 5 | Expired |
| US4221552A | Hydraulic motor with variable speed | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4051910A | Two way earth boring fluid motor | Fixed Constructions | 3 | Expired |
| USRE29180E | Moineau pump with rotating outer member | General | 2 | Expired |
| US3965870A | Method of operating an internal combustion engine with solvent refined coal as a fuel | Emerging Cross-Sectional Technologies | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.