|
| US5113945 | 7 Feb 1991 | 19 May 1992 | Elkhart Brass Mfg. Co., Inc. | Foam/water/air injector mixer |
| US6682057 | 1 May 2001 | 27 Jan 2004 | ESTR, Inc. | Aerator and wastewater treatment system |
| US7533734 | 15 Mar 2006 | 19 May 2009 | Parker-Hannifin Corporation | Pneumatic puncture device for aircraft fire suppression systems |
