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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F04B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
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9/00
Piston machines or pumps characterised by the driving or driven means to or from their working members
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F04B9/02
the means being mechanical
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F04B9/04
the means being cams, eccentrics or pin-and-slot mechanisms
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F04B9/042
the means being cams
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