Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4361998 | Standing seam roof system | Harry P. Spranca, Christopher C. Hooper | 1982-12-07 |
| 4321780 | Snap cap for architectural wall panel | Christopher C. Hooper, Harry P. Spranca | 1982-03-30 |