US PATENT SUBCLASS 135 / 81
.~.~.~.~ Spiked element housed within conventional elements

Current as of: June, 1999
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135 /   HD   TENT, CANOPY, UMBRELLA, OR CANE

65  DF  CANES, STICKS, CRUTCHES, AND WALKING AIDS {7}
77  DF  .~ Tips {5}
78  DF  .~.~ Exchangeable (e.g., conventional to spiked) {2}
80  DF  .~.~.~ Relatively movable spiked and conventional elements {1}
81.~.~.~.~ Spiked element housed within conventional elements

DEFINITION

Classification: 135/81

(under subclass 80) Tips wherein the spiked element is housed within the conventional element when not in the ground engaging position.