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JPS5947394A
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Method for preventing discoloration of silver
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JPS58167795A
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Method for plating spectacle frame with noble metal
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JPS58167073A
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Brazing method of titanium material
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JPS589975A
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Golden external parts for wrist watch
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JPS581073A
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Manufacture of external parts of gold color hard wrist watch
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JPS57203776A
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Inside surface finish-treatment method of wrist watch case
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JPS57203787A
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Gold-indium alloy plating method
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JPS57203788A
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Gold-cobalt alloy plating method
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JPS57174485A
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Black colored rhodium plating solution
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JPS57174493A
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Noble metal plating method of austenitic stainless steel
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JPS57174487A
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Gold-nickel alloy plating method
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