Robert J. Puhala

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Frederick, MD, US

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Patents Grantslast 30 patents

Information Patent Grant
Gas mask filter canister
- Patent number 8,292,991
- Issue date Oct 23, 2012
- Avon Protection Systems, Inc.
- David K. Friday
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Gas mask filter canister
- Patent number 7,311,764
- Issue date Dec 25, 2007
- Avon Protection Systems, Inc.
- David K. Friday
- A62 - LIFE-SAVING FIRE-FIGHTING

Patents Applicationslast 30 patents

Information Patent Application
GAS MASK FILTER CANISTER
- Publication number 20120167889
- Publication date Jul 5, 2012
- AVON PROTECTION SYSTEMS, INC.
- David K. Friday
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Gas mask filter canister
- Publication number 20050160911
- Publication date Jul 28, 2005
- David K. Friday
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL