Richard L. Stein

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El Toro, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Filter cartridge with integrated inhalation and exhalation valves
- Patent number 7,114,496
- Issue date Oct 3, 2006
- TMR-D, LLC
- Todd A Resnick
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Protective hooded respirator with oral-nasal cup breathing interface
- Patent number 6,736,137
- Issue date May 18, 2004
- TMR-A, LLC
- Todd A. Resnick
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Disposable face mask
- Patent number 5,701,893
- Issue date Dec 30, 1997
- Survivair, Inc.
- John J. Kern
- A41 - WEARING APPAREL