| http://www.w3.org/ns/prov#value | - Other than the document pair input system, the output system, and controls to be described, the exemplary copier 10 shown in FIG. 2 is a front view of the well known Xerox 1075 or 1090 xerographic copiers which provide automatic duplex copying, as illustrated and described in patents cited above, including U.S. Pat. No. 4,278,344 and others.
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