| http://www.w3.org/ns/prov#value | - cross section thereof or including the cross section of the through groove along the central axis thereof, and whose width in the cross section thereof widens in the rearward direction, (c) a backward biased locking member about which the two arms are to be wound, and which is provided movably back and forth behind the locking recess on the upper side of the sliding block and so made that the forw
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