Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8800333 | Key and lock cylinder combination | Ajeya S. Rao | 2014-08-12 |
| 6568725 | Lock chassis | Jonathan W. Furlong, Helmut R. Aigner | 2003-05-27 |
| 6131966 | Latch holdback mechanism for a mortise lock | Robert A. Babinski | 2000-10-17 |
| 6042417 | Power feed adapter | L. C. Derek Chamberlain | 2000-03-28 |
| 6038896 | Lockset with motorized system for locking and unlocking | L. C. Derek Chamberlain | 2000-03-21 |
| 5947537 | Spring biased handle catch | Helmut R. Aigner, Cliff Allen, Troy Dalsing, Melinda T. Neligon | 1999-09-07 |
| 5782118 | Lockset with motorized system for locking and unlocking | L. C. Derek Chamberlain | 1998-07-21 |
| 5657653 | Dual lock with simultaneous retraction of latch and deadbolt by inside lever and uncoulpler between driving spindle and the lever | Gary A. Dehn, Dario L. Pompeii, Jeffrey G. Towles | 1997-08-19 |
| 5070715 | Interchangeable lock core cylinder | Jon M. Smallegan | 1991-12-10 |