| http://www.w3.org/ns/prov#value | - etching device and is trimmed;FIG. 15 is an enlarged fragmentary section of the stretching device, taken generally along the line 15--15 of FIG. 13; andFIG. 16 is a fragmentary section similar to FIG. 15 and taken generally on the line 16--16 of FIG. 13.DESCRIPTION OF THE PREFERRED EMBODIMENTSReferri
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