Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890083 | Shielding material and shielded room | George Trenkler, Francois A. Padovani, Donald L. Winslow | 1989-12-26 |
| 4885214 | Composite material and methods for making | George Trenkler | 1989-12-05 |