Marine propulsion – Oscillating propelling means – Having nonpropelling cycle segment
Reexamination Certificate
2005-05-10
2005-05-10
Swinehart, Ed (Department: 3617)
Marine propulsion
Oscillating propelling means
Having nonpropelling cycle segment
C440S101000
Reexamination Certificate
active
06890226
ABSTRACT:
A rowing surf board includes a board having two through holes defined through the board and tow oars are respectively pivotably engaged with the through holes. Each oar has a blade portion which is pivotably connected to a distal end beneath the board such that the blade portion is pivoted to reduce a contact area against water when the blade portion is moved forward.
REFERENCES:
patent: 3377977 (1968-04-01), Malm
patent: 4043291 (1977-08-01), Bearup et al.
patent: 5041037 (1991-08-01), Jaw
patent: 3729651 (1989-03-01), None
Rosenberg , Klein & Lee
Swinehart Ed
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