| http://www.w3.org/ns/prov#value | - DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to the drawings, first more particularly to FIGS. 1-4, apparatus made in accordance with this invention for graining plates, and particularly sheet aluminum plates to be used as lithographic plates, is shown to comprise a vacuum table generally designated 1 adapted by means of vacuum to hold plates thereon to be grained, as will appear.
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