| http://www.w3.org/ns/prov#value | - References particularly material to vise-like constructions in their own right included U.S. Pat. No. 50,597 issued to Jones; U.S. Pat. No. 324,555 issued to Hish-comprising spring biased un-clamping means; and U.S. Pat. No. 797,376 issued to Schneider.
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