Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4783941 | Prefabricated panel for building wall construction | William Loper | 1988-11-15 |
| 4506482 | Prefabricated panel for building wall construction and method of making same | Hans J. Pracht | 1985-03-26 |