Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4364225 | Machine for producing self-twisting yarns | — | 1982-12-21 |
| 4351146 | Process and device for producing a yarn having alternate twists of opposite directions | Michel Vanhelle | 1982-09-28 |