Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848057 | Roofing shingles | Giuseppe Spinelli, Jayant B. Kandalgaonkar | 1989-07-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848057 | Roofing shingles | Giuseppe Spinelli, Jayant B. Kandalgaonkar | 1989-07-18 |