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PCE
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CPC Subgroup
F23D 14/32

using a mixture of gaseous fuel and pure oxygen or oxygen-enriched air (F23D14/38 takes precedence)

Full Title

Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid > using a mixture of gaseous fuel and pure oxygen or oxygen-enriched air (F23D14/38 takes precedence)