Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11953225 | Sealed and/or reinforced flanged ring connector for single- and double-wall HVAC ducting | — | 2024-04-09 |
| 10539337 | Sealed and/or reinforced flanged ring connector for single- and double-wall HVAC ducting | — | 2020-01-21 |
| 9101969 | Rectangular/square spiral ducting systems with flange connectors | — | 2015-08-11 |
| 9061342 | Standing seam connectors for ducting | — | 2015-06-23 |
| 7743504 | Rectangular and square ducting systems | — | 2010-06-29 |
| 7216898 | Flanged connector for HVAC ducting | — | 2007-05-15 |
| 7163030 | Rectangular and square double wall ducting systems | — | 2007-01-16 |
| 7124609 | Spin forming of HVAC duct reducers | — | 2006-10-24 |
| 7104104 | Rectangular and square ducting systems | — | 2006-09-12 |
| 7082796 | Circular and oval flanged rings for ducting and method of making | — | 2006-08-01 |
| 6301781 | Circular and oval flanged rings for connecting ducting and method of making | — | 2001-10-16 |
| 5983496 | Circular and oval flanged rings for connecting ducting and method of making | — | 1999-11-16 |