Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6484385 | Method for manufacturing self-sealing reinforcement tie rods for HVAC ducts | — | 2002-11-26 |
| 6370773 | Apparatus for making self-gripping air turning vanes | Donald H. Siiter | 2002-04-16 |
| 6308402 | Apparatus for manufacturing self-sealing reinforcement tie rods for HVAC ducts | — | 2001-10-30 |
| 6212771 | Method for making self-gripping air turning vanes | Donald H. Siiter | 2001-04-10 |
| 6167878 | Pneumatic ball tossing device | Andrew Nickerson, Frank Saulnier, Blair R. Cottreau | 2001-01-02 |
| 6158101 | Apparatus for assembling air turning vane and rail structures | Donald H. Siiter | 2000-12-12 |
| 6116833 | Self-sealing reinforcement tie rod for ventilating ducts | — | 2000-09-12 |
| 5927339 | Air turning assembly with self-gripping vanes | Donald H. Siiter | 1999-07-27 |