Water spider

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Details

9310D, 115 19, 272 1B, B63H 1600

Patent

active

040168263

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.

REFERENCES:
patent: 1248013 (1917-11-01), Risso
patent: 1533824 (1925-04-01), Benjamin
patent: 3237589 (1966-03-01), De Biasi
patent: 3318614 (1967-05-01), Lee
patent: 3628491 (1971-12-01), Conrad
patent: 3835494 (1974-09-01), Dougherty

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