Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5255969 | Double-walled cabinet structure for air conditioning equipment | John B. Greenfield, Kendall L. Ross | 1993-10-26 |
| 5228197 | Refrigerant coil fabrication methods | John B. Greenfield, Kendall L. Ross | 1993-07-20 |
| 5207074 | Refrigerant coil apparatus and associated condensate drain pan structure | John B. Greenfield, Kendall L. Ross | 1993-05-04 |
| 5170550 | Double-walled cabinet structure for air conditioning equipment | John B. Greenfield, Kendall L. Ross | 1992-12-15 |
| 5158432 | Centrifugal blower housing and methods of fabrication | — | 1992-10-27 |
| 5121613 | Compact modular refrigerant coil apparatus and associated manufacturing methods | John B. Greenfield, Kendall L. Ross | 1992-06-16 |