Risner; Melvin G.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Risner; Melvin G..The latest application filed is for "wheelchair lift with positive automatic handrail".
- Risner; Melvin G. - Carey OH
| Patent | Date |
|---|---|
| Wheelchair lift with positive automatic handrail Grant 4,718,812 - Smalley , et al. January 12, 1 | 1988-01-12 |
| Step convertible platform lift Grant 4,606,433 - Smalley , et al. August 19, 1 | 1986-08-19 |
| Automatic handrail for platform lift Grant 4,551,056 - Risner November 5, 1 | 1985-11-05 |
| Lift platform retainer Grant 4,480,719 - Risner November 6, 1 | 1984-11-06 |
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