William J. Marshall
8Patents
5h-index
13Co-inventors
60Inventor score
Filing activity: May 17, 1973 → Sep 15, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4420826A | Stress relief for flextensional transducer | Performing Operations; Transporting | 55 | Expired |
| US5769029A | Animal bathing and drying system | Human Necessities | 15 | Expired |
| US4435794A | Wall-driven oval ring transducer | Performing Operations; Transporting | 12 | Expired |
| US9057577B2 | Rifle dry-fire apparatus and method | Mechanical Engineering; Lighting; Heating | 8 | Active |
| US3986614A | Signature handling | Performing Operations; Transporting | 7 | Expired |
| US7719926B2 | Slotted cylinder acoustic transducer | Electricity | 4 | Active |
| US9207027B1 | Rifle dry-fire apparatus and method | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US11699534B2 | Devices and systems for material transportation | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.