| http://www.w3.org/ns/prov#value | - An industry product or part thereof on which there has been affixed on all significant surfaces by soldering, brazing, welding, or other mechanical means, a plating of gold alloy of not less than 10 karat fineness and of substantial thickness 5 may be marked or described as ???Gold Filled,??? ???Gold Overlay,??? ???Rolled Gold Plate,??? or an adequate abbreviation, when such plating constitutes at
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