US PATENT SUBCLASS 172 / 648
.~.~ Collapsible lazy tong group

Current as of: June, 1999
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172 /   HD   EARTH WORKING

613  DF  PLURAL RELATIVELY MOVABLE TOOLS {14}
645  DF  .~ Tools relatively adjustable horizontally without causing vertical displacement {7}
648.~.~ Collapsible lazy tong group

DEFINITION

Classification: 172/648

(under subclass 645) Apparatus in which the earth working elements or element-supporting bars are pivotally joined together to form a diamond shape, opposite apices of said

diamond being capable of movement toward or away from each other.