Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660915 | Bituminous roofing underfelt and base felt therefor | Michael Schoeps, Bertrand Weiter | 1997-08-26 |
| 5656354 | Root-resistant base layer | — | 1997-08-12 |
FK
Franz Kaulich
Overall (1997): #40,788 of 185,788Top 25%
2
Patents 1997