US PATENT SUBCLASS 441 / 21
.~ Having means to control attitude or position

Current as of: June, 1999
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441 /   HD   BUOYS, RAFTS, AND AQUATIC DEVICES

1  DF  BUOY {6}
21.~ Having means to control attitude or position {3}
22  DF  .~.~> Fluid reaction surface
23  DF  .~.~> Tether {1}
28  DF  .~.~> Having ballast means {1}

DEFINITION

Classification: 441/21

Having means to control attitude or position:

(under subclass 1) Buoy provided with means to control vertical, horizontal, or rotational movement of the buoy.

SEE OR SEARCH CLASS

114, Ships,

330+, for submersible devices having means for attitude control.