Patents Assigned to M. H. Sanders et al.
  • Water spider
    Patent number: 4016826
    Abstract: Four cylindrical floats with paddles are mounted upon crankshafts having double cranks thereon. The crankshafts are connected by treadle boards. When the treadles are operated by a standing person, the vehicle is propelled forward.
    Type: Grant
    Filed: April 5, 1976
    Date of Patent: April 12, 1977
    Assignee: M. H. Sanders et al.
    Inventor: David H. Sanders