Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5757908 | Method and apparatus for enabling trial period use of software products: method and apparatus for utilizing an encryption header | Thomas E. Cooper, Robert F. Pryor | 1998-05-26 |
| 5598470 | Method and apparatus for enabling trial period use of software products: Method and apparatus for utilizing a decryption block | Thomas E. Cooper, Robert F. Pryor | 1997-01-28 |