Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9776028 | Pre-primed preaction sprinkler system | Shawn J. Feenstra, Martin H. Workman, Michael J. Bosma | 2017-10-03 |
| 8863670 | Rail mover with independently pivoting wheel assemblies | — | 2014-10-21 |
| 8177189 | Fire protection control valve with rotating plug | Vinh B. Hoa | 2012-05-15 |
| 7845599 | Mounting coupling for sprinkler support system | — | 2010-12-07 |
| 7766252 | Dry sprinkler assembly | Shawn J. Feenstra | 2010-08-03 |
| 7389824 | Fire extinguishing system | — | 2008-06-24 |
| 7383892 | Preaction fire extinguishing system for ESFR cold storage applications | — | 2008-06-10 |
| 7185711 | Fire protection system | Vinh Boa Hoa | 2007-03-06 |
| 7055612 | Fire protection system | Vinh B. Hoa | 2006-06-06 |
| 6848513 | Fire protection valve trim assembly system | Shawn J. Feenstra | 2005-02-01 |
| 6371212 | Nozzle for a floor nozzle spray system | — | 2002-04-16 |
| 6182767 | Nozzle for a floor nozzle spray system | — | 2001-02-06 |
| 5174327 | In-line check valve | Perin E. Truax | 1992-12-29 |