| http://www.w3.org/ns/prov#value | - al carried on the frame and including portions thereof being thicker at those surface areas flattened below the remaining surface area;(c) a headrest supported at a front end of the chair;(d) means positioned on at least one side of the headrest and supported for free insertion into and removable from the chair for holding at least one tube instrument;(e) the front portion of the chair adjacent to
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