| http://www.w3.org/ns/prov#value | - The slip ring 226 can be purchased from manufacturers such as IDM Electronics LTD, Reading Berkshire, England, a division of Kaydon Corporation, Ann Arbor, Mich. [0043] The polishing article assembly 222 generally includes a conductive polishing article 203 coupled to a backing 207 and an electrode 209.
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