Oar

Details Oar Oar

2006-05-02

2006-05-02

Olson, Lars A. (Department: 3617)

Marine propulsion

Oar or paddle

C416S074000

Reexamination Certificate

active

07037151

ABSTRACT:
Disclosed is an oar, which has a supplementary blade pivotally connected to one end of the blade adjacent to the shaft thereof to increase the area of the water expelling surface, enhancing the rowing efficiency.

REFERENCES:
patent: 817810 (1906-04-01), Sheen
patent: 1066662 (1913-07-01), Schmidt., Jr
patent: 1324397 (1919-12-01), Hobart
patent: 3025538 (1962-03-01), Noland
patent: 4098219 (1978-07-01), Tesan
patent: 4892493 (1990-01-01), Gil
patent: 5041037 (1991-08-01), Jaw

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