Hays; Herbert G.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hays; Herbert G..The latest application filed is for "recuperative furnace".
- Hays; Herbert G. - Amana IA
- Hays; Herbert G. - High Amana IA
- Hays; Herbert G. - Homestead IA
| Patent | Date |
|---|---|
| Recuperative furnace Grant 4,622,947 - Hays , et al. November 18, 1 | 1986-11-18 |
| Sealing and air/fuel mixture flow metering plate for gas furnaces Grant 4,243,176 - Hays January 6, 1 | 1981-01-06 |
| Heat exchange control system Grant 3,997,109 - Hays December 14, 1 | 1976-12-14 |
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