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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2205/00
Fibre drawing or extruding details
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C03B2205/60
Optical fibre draw furnaces
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C03B2205/90
Manipulating the gas flow through the furnace other than by use of upper or lower seals, e.g. by modification of the core tube shape or by using baffles
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C03B2205/91
by controlling the furnace gas flow rate into or out of the furnace
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