Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879444 | Apparatus for the heat treatment of insulating materials using microwave energy and hot gas | Bernard Bichot | 1989-11-07 |
| 4830808 | Process for manufacturing shells of mineral fibers | Bernard Bichot | 1989-05-16 |