| http://www.w3.org/ns/prov#value | - To this end, the following U.S. Patents provide examples of writing aids which are controlled by the user to better enable him to write words, and the like: No. 2,497,418 issued Feb. 14, 1950; No. 3,972,628 issued Aug. 3, 1976; However, in none of the above-identified examples is the writing aid adapted to rotate around a pivot surface so that an associated writing instrument may be selectively ra
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