Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5013591 | Building sheeting and method of its manufacture | Ernst Scherp, Wilfried Schumacher, Petru Sabau | 1991-05-07 |
| 4601943 | Fire proofing web with vapor barrier | Karl Serwane | 1986-07-22 |