Patent classifications
C
CHEMISTRY; METALLURGY
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C03
GLASS; MINERAL OR SLAG WOOL
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C03B
MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
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2203/00
Fibre product details, e.g. structure, shape
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C03B2203/02
External structure or shape details
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C03B2203/06
Axial perturbations, e.g. twist, by torsion, undulating, crimped
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