US PATENT SUBCLASS 212 / 227
.~.~ And vertically swinging

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

223  DF  HAVING HORIZONTALLY SWINGING BOOM OR BRIDGE {9}
225  DF  .~ Having trolley thereon {3}
227.~.~ And vertically swinging

DEFINITION

Classification: 212/227

And vertically swinging:

(under subclass 225) Apparatus wherein the boom* or bridge* is also capable of pivotal movement about a horizontal axis.

SEE OR SEARCH THIS CLASS, SUBCLASS:

257, for a trolley carried by a boom which swings only vertically.