Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837822 | Cryptographic based electronic lock system and method of operation | Thomas Crosley, Wayne Davison, James R. Goldberg, Ronald D. Lichty, Charles A. Vollum +2 more | 1989-06-06 |
| D300300 | Combined door handle and lock unit | James R. Goldberg | 1989-03-21 |