Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D680417 | Key blank | — | 2013-04-23 |
| 7673484 | Key lock assembly | — | 2010-03-09 |
| 5758527 | High security deadbolt lock assembly | — | 1998-06-02 |
| 4639024 | Simultaneously operated dead bolt lock and security chain | — | 1987-01-27 |
| 4580819 | Security chain stored interior of lock housing | — | 1986-04-08 |
| 4577896 | Strike plate and security chain latch | — | 1986-03-25 |
| 4576023 | Door stile lock and latch bolt assembly | — | 1986-03-18 |
| 4573334 | Deadbolt lock adjustable for mounting in doors of various thicknesses | — | 1986-03-04 |
| 4570471 | Engagement of lock body within a hollow door-stile | — | 1986-02-18 |
| 4489577 | Coupling of keyway rosette to lock body | — | 1984-12-25 |
| 4474394 | Reinforced assembly of strike plate to door frame | — | 1984-10-02 |