Watkins; Baxter R.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Watkins; Baxter R..The latest application filed is for "electronic control system for stair climbing vehicle".
- Watkins; Baxter R. - Foster City CA
| Patent | Date |
|---|---|
| Electronic control system for stair climbing vehicle Grant 5,248,007 - Watkins , et al. September 28, 1 | 1993-09-28 |
| Wheelchair stair climbing control system Grant 5,123,495 - Littlejohn , et al. June 23, 1 | 1992-06-23 |
| Variable keyed power distribution and control system for motorized wheelchair Grant 5,033,000 - Littlejohn , et al. July 16, 1 | 1991-07-16 |
| Cushioning mechanism for stair-climbing wheelchair Grant 4,915,184 - Watkins April 10, 1 | 1990-04-10 |
| Stair-climbing wheelchair with stair step sensing means Grant 4,674,584 - Watkins June 23, 1 | 1987-06-23 |
| Stair-climbing wheelchair with means for cushioning vertical movements thereof Grant 4,671,369 - Tiffin , et al. June 9, 1 | 1987-06-09 |
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