Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F04
POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
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F04D
NON-POSITIVE-DISPLACEMENT PUMPS
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25/00
Pumping installations or systems
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F04D25/16
Combinations of two or more pumps; ; Producing two or more separate gas flows
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F04D25/163
driven by a common gearing arrangement
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