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Manufacture of zinc oxide
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Method of manufacturing lead silicate
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Wetting and dispersion of pigments
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Method of producing lead arsenate
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Method of treating lead oxide
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Method of treating basic lead sulphate
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Paint pigment composition
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Manufacture of lead oxide
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Composition of matter
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Process for refining lead
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Lead pigment
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Thermal insulating cement
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Manufacture of zinc sulphide pigment
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Manufacture of insulation material
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Process for refining lead
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Storage battery positive electrode and method of making the same
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Storage battery electrode and method of making the same
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Storage battery plate and method of making the same
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Storage battery plate and composition therefor
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Storage battery electrode
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