Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D666707 | Roof exhaust ventilator | Mark T. Eikhoff | 2012-09-04 |
| 6260315 | Methods of making a rollable shingle-over roof ridge vent | — | 2001-07-17 |
| 6233887 | Rollable shingle-over roof ridge vent and methods of making | — | 2001-05-22 |
| 5772502 | Adjustable pitch roof vent with accordion-shaped end plug | — | 1998-06-30 |
| 4885967 | Laser alignment device for sawmills | David Bell | 1989-12-12 |
| 4362589 | Method of manufacture of tapered wood I-beam | Stanley J. Willmorth | 1982-12-07 |