Alley; Raymond L.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Alley; Raymond L..The latest application filed is for "modified parallel blade damper for an air handling system".
- Alley; Raymond L. - Toledo OH
| Patent | Date |
|---|---|
| Modified parallel blade damper for an air handling system Grant 4,887,641 - Alley December 19, 1 | 1989-12-19 |
| Condition controlling air flow damper Grant 3,963,070 - Alley , et al. June 15, 1 | 1976-06-15 |
| Damper Grant 3,771,559 - Alley November 13, 1 | 1973-11-13 |
| Fire Damper Blade Latch Grant 3,650,069 - Alley March 21, 1 | 1972-03-21 |
| Smoke Seal For Curtain-type Fire Dampers Grant 3,575,229 - Alley April 20, 1 | 1971-04-20 |
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