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C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
C22F1/18—High-melting or refractory metals or alloys based thereon
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FR445320D1911-06-231912-06-22
Drawing process of fine refractory metal wires
ExpiredFR445320A
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