Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869942 | Trilaminated roofing shingle | Dale P. Major | 1989-09-26 |
| 4775440 | Method of making an offset laminated roofing shingle | Dale P. Major | 1988-10-04 |
| 4729814 | Apparatus for making an offset laminated roofing shingle | Dale P. Major | 1988-03-08 |