Duane M. Beukema
6Patents
6h-index
6Co-inventors
48Inventor score
Filing activity: Jun 21, 1979 → Apr 10, 1986
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4776633A | Integrated chair and control | Emerging Cross-Sectional Technologies | 141 | Expired |
| US4390206A | Synchrotilt chair control | Human Necessities | 81 | Expired |
| US4373692A | Chair control with height adjustment actuator | Human Necessities | 47 | Expired |
| US4438898A | Chain control locking assembly | Human Necessities | 43 | Expired |
| US4485996A | Height adjustor for furniture | Human Necessities | 18 | Expired |
| US4324382A | Height adjustable chair base | Human Necessities | 13 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.