Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889895 | Electron beam curable copolymer useful in recording media | John G. Chernega, Roger A. Olsen, Auburn B. Cottingham, deceased | 1989-12-26 |
| 4835647 | Stretched surface recording medium | John G. Chernega, Felix P. Lau, Leslie M. Milner | 1989-05-30 |