Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4915537 | Compound joint and method for its production | Winfried Griep | 1990-04-10 |
| 4722633 | Compound joint and method for its production | Winfried Griep | 1988-02-02 |
| 4530145 | Method of forming a pipe connection | Winfried Griep | 1985-07-23 |
| 4388013 | Pipe connection and method for production | Winfried Griep | 1983-06-14 |