| http://www.w3.org/ns/prov#value | - U.S. Pat. No. 4,479,445 to Walker is formed entirely of plastic, except for the needle which is formed of steel and closely resembles a hypodermic needle in that it has a bore extending through the length thereof and with the sharp end of the needle having an eye formed therethrough with one end of the bore terminating openly in the inner perimeter of the eye of the needle.
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