Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4531390 | Lock capping | Walter E. Best | 1985-07-30 |
| 4496178 | Extended latch tube assembly | Walter E. Best | 1985-01-29 |
| 4444034 | Pull-resistant lock core | Walter E. Best | 1984-04-24 |
| 4437695 | Knob retainer blocker mechanism | — | 1984-03-20 |
| 4435967 | Doorknob | Walter E. Best | 1984-03-13 |
| 4428212 | Cylinder lock retractor and chassis assembly | Walter E. Best | 1984-01-31 |
| 4428570 | Tool-loadable biasing spring | Kevin Carey | 1984-01-31 |
| 4424693 | Key-removable lock core | Walter E. Best | 1984-01-10 |
| 4424691 | Pull-resistant cylinder lock | — | 1984-01-10 |
| 4394821 | Door lock mechanism | Walter E. Best | 1983-07-26 |
| 4389061 | Mortise lock with improved deadlock release mechanism | — | 1983-06-21 |
| 4386510 | Key-changeable lock core | Walter E. Best | 1983-06-07 |
| 4342478 | Knob-connector spring | — | 1982-08-03 |
| 4318558 | Latch bolt mechanism | Walter E. Best | 1982-03-09 |
| 4313320 | Rim lock with classroom function | Walter E. Best | 1982-02-02 |
| 4301667 | Tubular latch bolt retracting mechanism | Walter E. Best | 1981-11-24 |
| 4294089 | Latchbolt rim lock | Walter E. Best | 1981-10-13 |
| 4294093 | Pin tumbler lock with pull-resistant key plug | Walter E. Best, Max L. Flack | 1981-10-13 |
| D256429 | Rim lock | Walter E. Best | 1980-08-19 |
| 4195504 | Mortise lock adaptation to key-removable cores | — | 1980-04-01 |