| http://www.w3.org/ns/prov#value | - The inferior spring element 50 can be affixed to the superior spring element 47 with two fasteners and includes a notch 71 that can extend to various lengths in the middle portion 105 thereby imparting to the inferior spring element 50 a U-shape. [0909]FIG. 133 is a bottom plan view of a spring element 51 including a superior spring element 47, and an inferior spring element 50 having a J-shape.
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