Wellman; Donald C.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Wellman; Donald C..The latest application filed is for "variable volume multizone system".
- Wellman; Donald C. - Marcellus NY
| Patent | Date |
|---|---|
| Variable volume multizone system Grant 4,630,670 - Wellman , et al. December 23, 1 | 1986-12-23 |
| Variable volume multizone system Grant 4,549,601 - Wellman , et al. October 29, 1 | 1985-10-29 |
| Variable volume multizone unit Grant 4,531,573 - Clark , et al. July 30, 1 | 1985-07-30 |
| Venturi flow measuring device and method Grant 4,509,371 - Wellman April 9, 1 | 1985-04-09 |
| Method of operating a variable volume multizone air conditioning unit Grant 4,495,986 - Clark , et al. January 29, 1 | 1985-01-29 |
| Electrostatic Precipitator Grant 3,800,509 - Carr , et al. April 2, 1 | 1974-04-02 |
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