Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6741160 | High security electronic combination lock | Daniel L. Thompson, Lee Stallard | 2004-05-25 |
| 6731025 | Motor with linear and rotary motion | James P. Redden | 2004-05-04 |
| 6583712 | Supervisor and subordinate lock system | Tim Reed, Adrian Schaefer, Will Miracle | 2003-06-24 |
| RE38147 | Electronic combination lock utilizing a one-time use combination | Daniel L. Thompson | 2003-06-17 |
| 6377006 | Method and apparatus for preventing the unauthorized opening of an electronic lock | David S. Wolterman, Mike Kelly | 2002-04-23 |
| 6333574 | Emitter and power drive system for an electronic lock | Thomas R. Clark, James P. Redden | 2001-12-25 |
| RE37011 | Electronic combination lock utilizing a one time use combination | Daniel L. Thompson | 2001-01-09 |
| 6076383 | Emitter and power drive system for an electronic lock | Thomas R. Clark, James P. Redden | 2000-06-20 |
| 6038897 | Back cover lock for a combination lock | James P. Redden | 2000-03-21 |
| 6034616 | Electronic combination lock with high security features | Michael P. Harvey, James C. Miller, Daniel L. Thompson | 2000-03-07 |
| 5881589 | Gear driven bolt withdrawal for an electronic combination lock | Thomas R. Clark, Walter R. Evans, James P. Redden | 1999-03-16 |
| 5873276 | Keypad entry electronic combination lock with self-generated combination | Daniel L. Thompson, James D. Hamilton | 1999-02-23 |
| 5870914 | Electronic combination lock with self-contained power generation | — | 1999-02-16 |
| 5847656 | Electronic combination lock with high security features | Daniel L. Thompson, J. Clayton Miller, Michael P. Harvey | 1998-12-08 |
| 5777559 | Electronic combination lock with high security features | Daniel L. Thompson, Michael P. Harvey, James C. Miller | 1998-07-07 |
| 5709114 | Keypad entry electronic combination lock with self-generated combination | Daniel L. Thompson | 1998-01-20 |
| 5592838 | Anti-attack interlocks for a combination lock mechanism | Thomas R. Clark, Paul T. Scherer | 1997-01-14 |
| 5517184 | Electronic combination lock with high security features | J. Clayton Miller, Daniel L. Thompson, Michael P. Harvey | 1996-05-14 |
| 5493279 | Electronic combination lock with covert entry detection feature and method of covert entry detection | Thomas E. Cassada, Michael J. Kelly, Craig Benjamin Williams | 1996-02-20 |
| 5488358 | Electronic combination lock with closure and locking verification | James Elree Hamilton, Daniel L. Thompson | 1996-01-30 |
| 5488660 | Electronic combination lock utilizing a one-time use combination | Daniel L. Thompson | 1996-01-30 |
| 5451934 | Electronic combination lock with time delay feature to control opening | Daniel L. Thompson | 1995-09-19 |
| 5410301 | Status monitoring system for an electronic lock | Craig Benjamin Williams | 1995-04-25 |
| 5271253 | Electronic combination lock with magnetic anti-attack interlock | Thomas E. Cassada | 1993-12-21 |
| 5265452 | Bolt lock bolt retractor mechanism | Thomas R. Clark | 1993-11-30 |