David W. Bartley

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Canton, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Decorative grating and method of manufacturing the same
- Patent number 9,822,494
- Issue date Nov 21, 2017
- Ohio Gratings, Inc.
- David W. Bartley
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Grating system with enhanced see-through characteristics
- Patent number 8,205,409
- Issue date Jun 26, 2012
- Ohio Gratings, Inc.
- David W. Bartley
- E04 - BUILDING
Information Patent Grant
Grating construction
- Patent number 4,928,471
- Issue date May 29, 1990
- Ohio Gratings, Inc.
- David W. Bartley
- E04 - BUILDING