Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6349980 | Joining/connector piece for corrugated pipes | Ernst Schwarz | 2002-02-26 |
| 6254145 | Joining and connecting element for corrugated pipes | Ernst Schwarz | 2001-07-03 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6349980 | Joining/connector piece for corrugated pipes | Ernst Schwarz | 2002-02-26 |
| 6254145 | Joining and connecting element for corrugated pipes | Ernst Schwarz | 2001-07-03 |