Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F28
HEAT EXCHANGE IN GENERAL
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F28F
DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
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27/00
Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
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F28F27/003
specially adapted for cooling towers
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