Grady A. Dugas, M.D. (October 24, 1923 - March 25, 2007), was a Louisiana physician who invented the "Safer Automatic Wheelchair Wheel Locks", a patented device designed for those who sometimes forget to lock their wheelchairs. For four decades Dugas was engaged in a family medical practice in tiny Marion in Union Parish, a part of the Monroe Standard Metropolitan Statistical Area, in northeast Louisiana. Wikipedia
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