| http://www.w3.org/ns/prov#value | - oronal cross section of another version of the ADR of FIG. 16; [0034]FIG. 19A is a coronal cross section of an alternative embodiment of the invention; [0035]FIG. 19B is an exploded view of the ADR of FIG. 19A; [0036]FIG. 20A is a view of the top of a circular or oval spring with an anterior opening; [0037]FIG. 20B is a view of the top of an alternative spring component without an opening; [0038]F
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