US PATENT SUBCLASS 212 / 202
.~ Vertically spaced fastening means along boom support

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

199  DF  HAVING BOOM SHIFTABLE VERTICALLY ALONG A LINEAR PATH {5}
202.~ Vertically spaced fastening means along boom support

DEFINITION

Classification: 212/202

Vertically spaced fastening means along boom support:

(under subclass 199) Apparatus wherein the structure supporting the boom* is provided with a plurality of securing means spaced vertically along the structure whereby the boom is supported at a selected one of a plurality of positions on the support.