Duggan; Robert B.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Duggan; Robert B..The latest application filed is for "premix boiler construction".
- Duggan; Robert B. - Michigan City IN
- Duggan; Robert B. - East Aurora NY
| Patent | Date |
|---|---|
| Premix boiler construction Grant 5,203,689 - Duggan , et al. April 20, 1 | 1993-04-20 |
| Premix boiler construction Grant 5,109,806 - Duggan , et al. May 5, 1 | 1992-05-05 |
| Side wall vent/air termination unit for boilers Grant 5,062,354 - Goins , et al. November 5, 1 | 1991-11-05 |
| Thermal Motors Grant 3,696,611 - Noakes , et al. October 10, 1 | 1972-10-10 |
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