Transportation – Watercraft or hull – Longitudinal planing steps or strakes on bottom
Patent
1980-06-30
1982-12-07
Douglas, Alan P.
Transportation
Watercraft or hull
Longitudinal planing steps or strakes on bottom
D12316, D1206
Patent
active
D02671700
REFERENCES:
patent: D198882 (1964-08-01), Barnard
patent: D249137 (1978-08-01), Hoyt
patent: D258055 (1981-01-01), Moody, Jr.
Polar Kraft Boat Catalog, p. 3, Boat, BF44DLX on page.
Douglas Alan P.
Laney William R.
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