Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7594518 | Vane assembly for HVAC duct systems | — | 2009-09-29 |
| 7493685 | Method and apparatus for fabricating arcuate sheet metal components for HVAC duct systems | — | 2009-02-24 |
| 6866308 | Interactive sealing system for arcuate ducts including seal compressed and actuated by adjacent expanding seal | — | 2005-03-15 |
| 6643930 | Method and apparatus for producing end flange member for cylindrical duct | — | 2003-11-11 |
| 6561553 | Angle plate fastening method and apparatus for air duct flange connectors | — | 2003-05-13 |
| 6428056 | Method and apparatus for stacking ankle plates to permit free, sliding, lateral displacement of plates | — | 2002-08-06 |
| 5794322 | Tool for installing clip on duct flanges | — | 1998-08-18 |
| 5378028 | Apparatus for connecting oval duct sections | George J. Ohandjanian | 1995-01-03 |
| 5352000 | Flange connector for air duct with detent adjacent sealing material | George J. Ohandjanian | 1994-10-04 |