Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4833660 | Device for detecting the presence of frost and/or for measuring the thickness of frost by ultrasound and frost probe usable in such a device | Jean-Claude Garnier, Didier Guffond | 1989-05-23 |