Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6779819 | Exit device having press bar-operated elongated securing member | — | 2004-08-24 |
| 5605362 | Exit device having a deadbolt as its securing member | — | 1997-02-25 |
| 5490697 | Access control assembly | — | 1996-02-13 |
| 4976480 | Cylindrical lockset having quick mount means accommodating various thickness of doors | David Dixon | 1990-12-11 |
| 4920773 | Door lock having disengages outer lever handle when in the locked condition and means to bias the handle toward horizontal position | — | 1990-05-01 |
| 4665583 | Door closer piston assembly having separate head portions | Georgy Frolov | 1987-05-19 |
| 4638651 | Lock cylinder having two sets of tumblers and key therefor | — | 1987-01-27 |
| 4419786 | Door closer assembly | — | 1983-12-13 |
| 4236396 | Retrofit lock | LeRoy Hart | 1980-12-02 |
| 4208894 | Cam lock | — | 1980-06-24 |