Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5615481 | Method and apparatus for the production of circumferentially compressible pipe fittings | Walter Viegener, Wolfgang Grau | 1997-04-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5615481 | Method and apparatus for the production of circumferentially compressible pipe fittings | Walter Viegener, Wolfgang Grau | 1997-04-01 |