Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6820501 | Differential static pressure measuring and activating device and control mechanism | Adrien de Borchgrave | 2004-11-23 |
| 6772753 | Adjustable orifice plate for exhaust ducts | Adrien de Borchgrave, Clifton Sprinkles, Lawrence Cook | 2004-08-10 |