Manually powered ski

Details Manually powered ski Manually powered ski

1992-06-02

1994-01-25

Chin, Kay H.

Transportation

Watercraft or hull

Sailboat

D12306, D21236

Patent

active

D03436098

REFERENCES:
patent: D187357 (1960-03-01), Silva
patent: D299123 (1988-12-01), Olafsen
patent: 3352276 (1967-11-01), Zimmerman
patent: 3809003 (1974-05-01), Foldvari

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