Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4751130 | Fastening of a covering material to a substratum | Marcel Grossmann | 1988-06-14 |
| 4711681 | Fastening of a covering material to a substratum | Marcel Grossmann | 1987-12-08 |