David Keech
9Patents
4h-index
8Co-inventors
50Inventor score
Filing activity: Aug 9, 1985 → Jan 22, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4703956A | T-fitting for use with different diameter pipes | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4631001A | T-fitting with one way valve and water level sensor for a sump apparatus | Emerging Cross-Sectional Technologies | 17 | Expired |
| USD815196S1 | Printer | General | 9 | Active |
| USD555190S1 | Electronic piano | General | 7 | Expired |
| USD336411S | Heated frozen food server | General | 4 | Expired |
| USD551211S1 | Musical sound controller | General | 4 | Expired |
| USD856413S1 | Printer | General | 3 | Active |
| USD843444S1 | Printer | General | 2 | Active |
| US7498502B2 | Keyboard musical instrument having accommodation space for fallboard between keyboard and rear top board | Physics | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.