Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D555232 | Downspout side discharge elbow | Mark Winn Beutler | 2007-11-13 |
| D552220 | Downspout discharge elbow | Mark Winn Beutler | 2007-10-02 |
| D552221 | Downspout side elbow coupling | Mark Winn Beutler | 2007-10-02 |
| D552219 | Downspout elbow coupling | Mark Winn Beutler | 2007-10-02 |
| 6929057 | Building heating assembly | Jeffrey Lee Smith, Michael Kevin Hartsough, Gregory Christopher Briggs, Robert Glenn Richard, Martin Gatsumi Goto +1 more | 2005-08-16 |
| 6138424 | Vent apparatus for attachment to a building structure | Derek Parnell Akerson | 2000-10-31 |
| 5934994 | Damper apparatus including plenum and multiple damper blades | Calvin R. Wylie | 1999-08-10 |