US PATENT SUBCLASS 114 / 139
.~.~ Sectional

Current as of: June, 1999
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114 /   HD   SHIPS

127  DF  CENTERBOARDS {5}
138  DF  .~ Vertical drop {1}
139.~.~ Sectional

DEFINITION

Classification: 114/139

Centerboards adapted to be moved vertically and composed of a plurality of movable parts.