Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5597045 | Process and tool for laying underground collector mains for liquids and gases | Ingo Sass, Hans-Joachim Bayer, Klaus Kleiser | 1997-01-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5597045 | Process and tool for laying underground collector mains for liquids and gases | Ingo Sass, Hans-Joachim Bayer, Klaus Kleiser | 1997-01-28 |