Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5346384 | Apparatus for the production of plastic pipes | Ralph-Peter Hegler | 1994-09-13 |
| 5320697 | Method for welding together pipes consisting of thermoplastic plastics | Ralph-Peter Hegler | 1994-06-14 |
| 5320797 | Method and apparatus for the continuous manufacture of a compound pipe with a pipe socket | Ralph-Peter Hegler | 1994-06-14 |