Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4947163 | Electronic security system with configurable key | Walter G. Henderson, John Q. Archer, II, George A. Ellson, John Gray, Wayne F. Larson +4 more | 1990-08-07 |
| 4916443 | Method and apparatus for compiling data relating to operation of an electronic lock system | Philip D. Barrett, Wayne F. Larson | 1990-04-10 |
| 4914732 | Electronic key with interactive graphic user interface | Walter G. Henderson, John Q. Archer, II, George A. Ellson, John Gray, Wayne F. Larson +4 more | 1990-04-03 |
| 4896246 | Electronic lock with energy conservation features | Walter G. Henderson, John Q. Archer, II, George A. Ellson, John Gray, Wayne F. Larson +4 more | 1990-01-23 |
| 4766746 | Electronic real estate lockbox system | Walter G. Henderson, John Q. Archer, II, George A. Ellson, John Gray, Wayne F. Larson +4 more | 1988-08-30 |