Walter W. Chamberlain

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Lancaster, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Durable acoustical panel and method of making the same
- Patent number 6,616,804
- Issue date Sep 9, 2003
- AWI Licensing Company
- Robert E. Foster
- B44 - DECORATIVE ARTS
Information Patent Grant
Ceiling board aperture
- Patent number 5,231,810
- Issue date Aug 3, 1993
- Armstrong World Industries, Inc.
- Barry Buhay
- E04 - BUILDING
Information Patent Grant
Method of making perforated vinyl film ceiling board
- Patent number 3,954,540
- Issue date May 4, 1976
- Armstrong Cork Company
- Walter W. Chamberlain
- B32 - LAYERED PRODUCTS

Patents Applicationslast 30 patents

Information Patent Application
Durable acoustical panel and method of making the same
- Publication number 20030041987
- Publication date Mar 6, 2003
- Armstrong World Industries, Inc.
- Robert E. Foster
- B44 - DECORATIVE ARTS
Information Patent Application
Durable acoustical panel and method of making the same
- Publication number 20020096278
- Publication date Jul 25, 2002
- Armstrong World Industries, Inc.
- Robert E. Foster
- B44 - DECORATIVE ARTS