Robert Yee

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Wilkinsburg, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Non-slip miter butt joint
- Patent number 4,739,600
- Issue date Apr 26, 1988
- Chelsea Industries, Inc.
- Ronald J. Lynch
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS