Patent classifications
G
PHYSICS
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G05
CONTROLLING; REGULATING
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G05D
SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
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G05D16/20
characterised by the use of electric means
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G05D16/2006
with direct action of electric energy on controlling means
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G05D16/2013
using throttling means as controlling means
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G05D16/2024
the throttling means being a multiple-way valve
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