David E. Wallis
11Patents
7h-index
10Co-inventors
63Inventor score
Filing activity: Dec 28, 1973 → Dec 27, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4016942A | Method and apparatus for indicating the position of one well bore with respect to a second well bore | Fixed Constructions | 57 | Expired |
| US5816658A | Head rest lock | Performing Operations; Transporting | 48 | Expired |
| US5556189A | Omni-directional airport taxiway light and fixture | Mechanical Engineering; Lighting; Heating | 33 | Expired |
| US5265597A | Passenger oxygen mask having a plurality of fingers and recesses for mounting the mask to an oxygen bag | Human Necessities | 17 | Expired |
| US5511853A | Recreational vehicle center console seat with folding armrest and beverage container holder | Performing Operations; Transporting | 14 | Expired |
| US9888781B2 | Extendible sofa | Performing Operations; Transporting | 9 | Active |
| US9107507B2 | Adjustable telescoping arm | Performing Operations; Transporting | 8 | Active |
| US4396918A | Low-frequency radio navigation system | Physics | 6 | Expired |
| US8077474B2 | Variable equalizer apparatus | Electricity | 1 | Active |
| US10172469B2 | Extendible sofa | Performing Operations; Transporting | 0 | Active |
| US11052852B2 | Impact detection system | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.