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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C22C
ALLOYS
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C22C1/045
Alloys based on refractory metals
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C22C1/0458
Alloys based on titanium, zirconium or hafnium
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