Don A. Kumher

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Burton, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Multi-position ladder and support therefor
- Patent number 6,315,078
- Issue date Nov 13, 2001
- Don A. Kumher
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
Multi-position ladder and support therefor
- Patent number 6,105,720
- Issue date Aug 22, 2000
- Don A. Kumher
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
Multi-position ladder and support therefor
- Patent number 6,073,725
- Issue date Jun 13, 2000
- Don A. Kumher
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS