US PATENT SUBCLASS 182 / 136
.~ Alternate grasping

Current as of: June, 1999
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182 /   HD   FIRE ESCAPE, LADDER, OR SCAFFOLD

133  DF  POLE OR STRAND GRASPING-TYPE CLIMBER {2}
136.~ Alternate grasping

DEFINITION

Classification: 182/136

(under subclass 133) Device including vertically spaced alternately operable gripping means.