US PATENT SUBCLASS 52 / 160
.~ Spreader cam or plate

Current as of: June, 1999
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52 /   HD   STATIC STRUCTURES (E.G., BUILDINGS)

155  DF  PIERCING OR EXPANDING EARTH ANCHOR {7}
160.~ Spreader cam or plate {1}
161  DF  .~.~> Screw operated

DEFINITION

Classification: 52/160

(under subclass 155) Structure including a movable cam or plate which acts to spread the movable anchor component relative to the parts to which it is attached.