Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6274073 | Process for producing a pipe fitting consisting of thermally weldable material | — | 2001-08-14 |
| 6236026 | Device for welding an accessory on a pipe by means of electrical heating elements integrated in said accessory | Werner Hintzen | 2001-05-22 |