Paul A. Zeller

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Pittsburgh, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Adjustable headband
- Patent number 7,296,305
- Issue date Nov 20, 2007
- Mine Safety Appliances Company
- Kevin R. Ketterer
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Respirator facepieces
- Patent number 7,261,104
- Issue date Aug 28, 2007
- Mine Safety Appliances Company
- Eileen A. Kiefer
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Adjustable headband
- Patent number 7,089,603
- Issue date Aug 15, 2006
- Mine Safety Appliances Company
- Kevin R. Ketterer
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Suspension for protective headgear
- Patent number 6,481,023
- Issue date Nov 19, 2002
- Mine Safety Appliances Company
- Layton A. Wise
- A42 - HEADWEAR
Information Patent Grant
Flexible respirator filter
- Patent number 6,345,620
- Issue date Feb 12, 2002
- Mine Safety Appliances Company
- Thomas M. Salapow
- A62 - LIFE-SAVING FIRE-FIGHTING

Patents Applicationslast 30 patents

Information Patent Application
Adjustable headband
- Publication number 20060101560
- Publication date May 18, 2006
- Kevin R. Ketterer
- A42 - HEADWEAR
Information Patent Application
Adjustable headband
- Publication number 20060053532
- Publication date Mar 16, 2006
- Kevin R. Ketterer
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
Respirator facepieces
- Publication number 20030047183
- Publication date Mar 13, 2003
- Eileen A. Kiefer
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Application
Suspension for protective headgear
- Publication number 20020000004
- Publication date Jan 3, 2002
- Layton A. Wise
- A42 - HEADWEAR
Information Patent Application
FLEXIBLE RESPIRATOR FILTER
- Publication number 20010054424
- Publication date Dec 27, 2001
- THOMAS M. SALAPOW
- A62 - LIFE-SAVING FIRE-FIGHTING