Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5317889 | Front loaded cylinder for door lockset | Paul G. Solovieff | 1994-06-07 |
| 4672829 | Doorlatch knob assembly having front end loading | Thomas Sheng-Shyong Hu | 1987-06-16 |
| 4631944 | Knob assembly for doorlatches including free knob rotation and front end loading | Thomas Sheng-Shyong Hu | 1986-12-30 |
| 4472953 | Pin-type lock with axial split cylinder and/or plug | — | 1984-09-25 |
| 4422677 | Latch bolt having crank camming for positive bolt positioning | — | 1983-12-27 |
| 4372594 | Bayonet joint backset adjustment for latch constructions | — | 1983-02-08 |