Holtkamp; Calvin J.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Holtkamp; Calvin J..The latest application filed is for "thermal cycling switch".
- Holtkamp; Calvin J. - Mansfield OH
| Patent | Date |
|---|---|
| Thermal cycling switch Grant 4,471,338 - Holtkamp September 11, 1 | 1984-09-11 |
| Multi-function self-cleaning oven thermostat Grant 4,214,224 - Holtkamp July 22, 1 | 1980-07-22 |
| Push-to-turn thermal cycling switch Grant 3,932,830 - Holtkamp January 13, 1 | 1976-01-13 |
| Oven Latch Operated Feature Switch Grant 3,648,011 - Holtkamp March 7, 1 | 1972-03-07 |
| Door Structure For A Self-cleaning Oven Grant 3,561,423 - Holtkamp , et al. February 9, 1 | 1971-02-09 |
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