Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12320542 | Parallel-walled ventilation duct assembly with integrated low-profile subducts | Thaddeus James Rohskopf, Brian William Ryglewicz | 2025-06-03 |
| 11766578 | Active stairwell compensation systems and methods | Jon Randall Hinson | 2023-09-26 |
| 10443840 | Reversible draft controllers and exhaust systems incorporating same | — | 2019-10-15 |
| D727489 | Draft inducer | Thaddeus James Rohskopf | 2015-04-21 |
| D726896 | Draft inducer | Thaddeus James Rohskopf | 2015-04-14 |
| 8708673 | Inline shaft driven draft inducer | Thaddeus James Rohskopf | 2014-04-29 |
| D690001 | Blower unit housing | — | 2013-09-17 |
| 8267759 | Sub-duct and method of exhausting into a generally vertical main shaft | Brian William Ryglewicz, Mark Steven Sylvia | 2012-09-18 |