Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11581830 | Door closer system | Ian K. Heckman, Yong Kwan Lacy, Brendon Allen, Brian C. Eickhoff, Ron Kielkowski +2 more | 2023-02-14 |
| 10400475 | Systems and methods for key recognition | Peter F. Klammer, Michael P. Hogan, Samir M. Tamer, Donald D. Baker, Douglas A. Holmes | 2019-09-03 |
| 10236801 | Door closer system | Ian K. Heckman, Yong Kwan Lacy, Brendon Allen, Brian C. Eickhoff, Ron Kielkowski +2 more | 2019-03-19 |
| 9322195 | Lock devices, systems and methods | William B. Ainley, Aaron P. McKibben, Brian A. Telljohann | 2016-04-26 |
| 8480136 | Exit device and method of operating the same | Raymond F. Rettig, William W. Myntti | 2013-07-09 |
| 8182003 | Exit device and method of operating the same | Raymond F. Rettig, William W. Myntti | 2012-05-22 |
| 7616090 | Electronic security system | Donald D. Baker, Paul J. Hoggard | 2009-11-10 |
| 6304177 | Switching assembly for an exit alarm lock | Daniel N. Nigro, Jr., Eugene Karl Siller | 2001-10-16 |
| 5904384 | Push pad trigger release exit device with infinite deadlocking | Gerald E. Mader, Matthew S. Prucinsky | 1999-05-18 |
| 5762385 | Push pad trigger release exit device with infinite deadlocking | Gerald E. Mader, Matthew S. Prucinsky | 1998-06-09 |
| 5673949 | Push pad trigger release for a vertical rod exit device | Gerald E. Mader, Matthew S. Prucinsky | 1997-10-07 |
| 5610794 | Door holder having electromagnetic flux generator and power control circuit | Paul J. Hoggard | 1997-03-11 |
| 5609371 | Push pad trigger release exit device with infinite deadlocking | Gerald E. Mader, Matthew S. Prucinsky | 1997-03-11 |
| 5566376 | Electromagnetic coil for use in a door holder system | Paul J. Hoggard | 1996-10-15 |
| 5555484 | Electromagnetic door holder system | Paul J. Hoggard | 1996-09-10 |
| 5184855 | Electromagnetic door lock assembly | Kevin Waltz, Donald D. Baker | 1993-02-09 |
| 4624120 | Key-operated, exit alarm, switch cam assembly and modification kit and modification method for switch cam assemblies | Herbert W. Hoffman, Richard B. Cohrs | 1986-11-25 |