Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4499701 | Rabbeted shingle butt joint sidewall panel and shingle component | Joe L. Bockwinkel | 1985-02-19 |
| 4459788 | Plywood-backed double course shingle panel | Joe L. Bockwinkel | 1984-07-17 |
| 4345630 | Method of making rabbeted shingle butt joint sidewall panel | Joe L. Bockwinkel | 1982-08-24 |