|
| US4688567 | 24 Jan 1986 | 25 Aug 1987 | Tensho Electric Industries Co., Ltd. | Gas mask |
| US6397265 | 5 Dec 1997 | 28 May 2002 | Canon Kabushiki Kaisha | Print control apparatus for communicating with a selected external apparatus to control a printer |
| US6701925 | 11 Apr 2002 | 9 Mar 2004 | | Protective hood respirator |
| US7114496 | 2 Mar 2005 | 3 Oct 2006 | TMR-D, LLC | Filter cartridge with integrated inhalation and exhalation valves |
| US7152600 | 11 Jun 2003 | 26 Dec 2006 | Biokidz USA NFP | Biohazard mask suitable for civilians |
