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Class Information
Number: 135/81
Name: Tent, canopy, umbrella, or cane > Canes, sticks, crutches, and walking aids > Tips > Exchangeable (e.g., conventional to spiked) > Relatively movable spiked and conventional elements > Spiked element housed within conventional elements
Description: Tips wherein the spiked element is housed within the conventional element when not in the ground engaging position.


Patents under this class:

Patent Number Title Of Patent Date Issued
7377551 Collapsible snowboard pole May. 27, 2008
5711335 Medical walker foot with collapsible tip Jan. 27, 1998
5433234 Supportive device for walking Jul. 18, 1995
5056546 Non-slip walking assist device Oct. 15, 1991
4977914 Slip resistent apparatus for canes, crutches and walkers Dec. 18, 1990
4411284 Walking aid tip assembly Oct. 25, 1983
4364405 Crutch containing a retractable metal point Dec. 21, 1982



 
 
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