Robert H. Day

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Sun Valley, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Slide mechanism for an improved bind-free, expandable structural frame
- Patent number 4,735,025
- Issue date Apr 5, 1988
- S.D.S. Industries, Inc.
- Robert H. Day
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS