Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7536885 | Bimodal door security system | Russell H. Ross, Timothy C. Maleck | 2009-05-26 |
| 6820905 | Vertical panic exit device | Raymond W. Peeler, Greg Drake, Albert E. Ranzau, III | 2004-11-23 |
| 6532777 | Panic exit device mounting plate | Greg Drake, Albert E. Ranzau, III | 2003-03-18 |
| 6205825 | Panic exit device mounting plate | Greg Drake, Albert E. Ranzau, III | 2001-03-27 |
| 6131338 | Removable mullion assembly | Raymond W. Peeler | 2000-10-17 |
| 6009732 | Panic exit device | Greg Drake, Albert E. Ranzau, III. | 2000-01-04 |
| 5890319 | Removable mullion assembly | Raymond W. Peeler | 1999-04-06 |
| 5516161 | Breakaway lever clutch with cam drive pin | Gerald E. Mader | 1996-05-14 |
| 5450651 | End cap locking overhead mounted door holder assembly | Michael D. Coleman, Herman M. Tilly | 1995-09-19 |
| 5085475 | Exit-delaying mechanism, for a panic exit device | Marlin Austin, Michael L. Cain | 1992-02-04 |
| 5067757 | Panic exit device having noise suppression | Richard B. Cohrs, Gary R. Jacobs | 1991-11-26 |
| 5042852 | Latch and rod guard assembly | Roger A. Vitt, Jorge Navarro | 1991-08-27 |
| 5011199 | Panic exit device having an exit-delaying mechanism | Peter E. Lowe, Peter Muller, Michael D. Coleman | 1991-04-30 |
| 4658664 | Rack and pinion assembly | Gary R. Jacobs | 1987-04-21 |
| 4641866 | Lever handle door trim | Gary R. Jacobs | 1987-02-10 |
| 4499669 | Combination dryer and surge bin | — | 1985-02-19 |
| 4437554 | Fluid shear coupling apparatus | — | 1984-03-20 |
| 4403684 | Fluid shear coupling apparatus | — | 1983-09-13 |
| 4308475 | Solenoid pump adapted for noiseless operation | — | 1981-12-29 |