Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7038570 | Protector for thermal switch installed in electromagnetic coils | Steven Clyde McMichael, Robert Wilton James, Andrew Scott Friebe, Robert Reginald Mara | 2006-05-02 |
| D438609 | Fan | — | 2001-03-06 |
| D407152 | Air cooler | — | 1999-03-23 |
| 4973231 | Submersible pump | — | 1990-11-27 |
| 4643644 | Shaft and pulley assembly | Robert W. Wrightson | 1987-02-17 |
| 4599042 | Fan casing volute | — | 1986-07-08 |
| 4576505 | Pulley mounting means | Robert W. Wrightson | 1986-03-18 |
| 4562016 | Evaporative air-conditioner water bleed-off system | — | 1985-12-31 |