Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6725609 | Folded ridge cover and method of fabrication | Mark Freiborg | 2004-04-27 |
| 6547126 | Packaging box with fixed partitions | Mark Freiborg | 2003-04-15 |
| 6367627 | Packaging box for folded ridge cover roofing | Mark Freiborg | 2002-04-09 |
| 5377459 | Ridge cover and shingle and method of making and using the same | — | 1995-01-03 |
| 5319898 | Asphalt composition ridge cover | — | 1994-06-14 |
| 4768318 | Asphalt composition starter and flashing | — | 1988-09-06 |
| 4672790 | Multi-piece asphalt composition roofing system | — | 1987-06-16 |
| 4580389 | Method of forming roofing piece | — | 1986-04-08 |
| 4439955 | Asphalt composition hip and ridge cover | — | 1984-04-03 |
| 4434589 | Asphalt composition hip and ridge cover | — | 1984-03-06 |
| 4404783 | Multi purpose roof piece | — | 1983-09-20 |
| 4322928 | Asphalt composition shingles | — | 1982-04-06 |