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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1/00
Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
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C22F1/04
of aluminium or alloys based thereon
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C22F1/043
of alloys with silicon as the next major constituent
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