Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660915 | Bituminous roofing underfelt and base felt therefor | Michael Schoeps, Franz Kaulich | 1997-08-26 |
BW
Bertrand Weiter
Overall (1997): #172,701 of 185,788Top 95%
1
Patents 1997