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Colby Mainil
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Weyburn, CA
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Patent Grant
Step climbing wheelchair
Patent number
7,540,504
Issue date
Jun 2, 2009
Mike Ehman
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Patent Application
STEP CLIMBING WHEELCHAIR
Publication number
20080073863
Publication date
Mar 27, 2008
Mike Ehman
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE