US PATENT SUBCLASS 212 / 263
.~.~.~ Human or animal powered

Current as of: June, 1999
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212 /   HD   TRAVERSING HOISTS

255  DF  HAVING VERTICALLY SWINGING BOOM {6}
260  DF  .~ Having means to swing boom vertically {2}
262  DF  .~.~ Flexible cable {1}
263.~.~.~ Human or animal powered

DEFINITION

Classification: 212/263

Human or animal powered:

(under subclass 262) Apparatus wherein means are provided by which a person or animal may apply a flexible force to the cable to swing the boom* vertically.

SEE OR SEARCH THIS CLASS, SUBCLASS:

241, for similar apparatus having booms which additionally swing about a vertical axis.