US PATENT SUBCLASS 114 / 167
.~.~ Sectional

Current as of: June, 1999
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144 R  DF  STEERING MECHANISM {14}
162  DF  .~ Rudders {9}
167.~.~ Sectional

DEFINITION

Classification: 114/167

Rudders composed of a plurality of rudders, parts, extensions, or blades designed to increase resistance-surface.