David W. Gibbard

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Lapeer, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Interior corner joint simulating grout line for wall boards simulat...
- Patent number 5,444,953
- Issue date Aug 29, 1995
- Trayco, Inc.
- Paul J. Koenig
- E04 - BUILDING
Information Patent Grant
Extension joint simulating grout like for tile board
- Patent number 5,263,294
- Issue date Nov 23, 1993
- Trayco, Inc.
- Paul J. Koenig
- E04 - BUILDING