Philip R. Keller

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Mercersburg, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Staircase and method for construction
- Patent number 8,966,859
- Issue date Mar 3, 2015
- Signature Companies
- Philip R. Keller
- E04 - BUILDING
Information Patent Grant
Staircase and method for construction
- Patent number 8,707,638
- Issue date Apr 29, 2014
- Signature Companies
- Philip R. Keller
- E04 - BUILDING

Patents Applicationslast 30 patents

Information Patent Application
STAIRCASE AND METHOD FOR CONSTRUCTION
- Publication number 20140190118
- Publication date Jul 10, 2014
- Signature Companies
- Philip R. Keller
- E04 - BUILDING
Information Patent Application
STAIRCASE AND METHOD FOR CONSTRUCTION
- Publication number 20130255168
- Publication date Oct 3, 2013
- Signature Companies
- Philip R. Keller
- E04 - BUILDING