Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B61
RAILWAYS
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B61D
BODY DETAILS OR KINDS OF RAILWAY VEHICLES
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27/00
Heating, cooling, ventilating, or air-conditioning
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B61D27/0018
Air-conditioning means, i.e. combining at least two of the following ways of treating or supplying air, namely heating, cooling or ventilating
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