Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F23
COMBUSTION APPARATUS; COMBUSTION PROCESSES
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F23B
METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
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10/00
Combustion apparatus characterised by the combination of two or more combustion chambers
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F23B10/02
including separate secondary combustion chambers
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