Patent classifications
C
CHEMISTRY; METALLURGY
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C22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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C22F
CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
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3/00
Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons
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C22F3/02
by solidifying a melt controlled by supersonic waves or electric or magnetic fields
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