Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12007141 | Foldable, boot loadable, insertable air damper device | Mark Votaw, Dennis Laughlin, Al Zelczer, Howard Zelczer, Lenny Roth +2 more | 2024-06-11 |
| 8951103 | Foldable, boot loadable, insertable air damper device | Mark Votaw, Dennis Laughlin, Al Zelczer, Howard Zelczer, Lenny Roth +2 more | 2015-02-10 |
| 8621881 | System and method for heat pump oriented zone control | Mark Votaw, Dennis Laughlin, Bill Molica, Ken Barton | 2014-01-07 |
| 7789317 | System and method for heat pump oriented zone control | Mark Votaw, Thomas Delp, Dennis Laughlin, Al Zelczer, Leonard Roth +1 more | 2010-09-07 |
| 7775448 | System and method for heat pump oriented zone control | Mark Votaw, Thomas Delp, Dennis Laughlin, Al Zelczer, Leonard Roth +1 more | 2010-08-17 |
| 7566264 | Small duct high velocity damper assembly | Mark Votaw, Thomas Delp, Dennis Laughlin, Al Zelczer, Leonard Roth +2 more | 2009-07-28 |