Ingraham; Ronald D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ingraham; Ronald D..The latest application filed is for "fifth wheel hitch coupling control system".
- Ingraham; Ronald D. - Reed City MI
- Ingraham; Ronald D. - Quincy MI
| Patent | Date |
|---|---|
| Fifth wheel hitch coupling control system Grant 5,861,802 - Hungerink , et al. January 19, 1 | 1999-01-19 |
| Magnetic field energy responsive position sensing apparatus and method Grant 5,789,915 - Ingraham August 4, 1 | 1998-08-04 |
| Glow plug controller Grant 5,570,666 - Rymut , et al. November 5, 1 | 1996-11-05 |
| Vehicle starter and electrical system protection Grant 5,413,072 - Andersen , et al. May 9, 1 | 1995-05-09 |
| Vehicle starter and electrical system protection Grant 5,287,831 - Andersen , et al. February 22, 1 | 1994-02-22 |
| Motor vehicle heated seat control Grant 5,229,579 - Ingraham , et al. July 20, 1 | 1993-07-20 |
| Capacity responsive keyboard Grant 5,087,825 - Ingraham February 11, 1 | 1992-02-11 |
| Combination vehicular braking and accessory control system Grant 5,010,972 - Ingraham , et al. April 30, 1 | 1991-04-30 |
| Capacity responsive control circuit Grant 4,831,279 - Ingraham May 16, 1 | 1989-05-16 |
| DC touch control switch circuit Grant 4,758,735 - Ingraham July 19, 1 | 1988-07-19 |
| Touch control switch circuit Grant 4,731,548 - Ingraham March 15, 1 | 1988-03-15 |
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