Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4791572 | Method for accurately displaying positional information on a map | Lawrence R. Green, Donald R. Gray, Robert L. Gendler | 1988-12-13 |
| 4651157 | Security monitoring and tracking system | Donald R. Gray, Lawrence R. Green, Robert L. Gendler | 1987-03-17 |