Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871886 | Electronic key and receptacle therefor | John E. Vaughan, David R. Smale, John C. Heaton | 1989-10-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871886 | Electronic key and receptacle therefor | John E. Vaughan, David R. Smale, John C. Heaton | 1989-10-03 |