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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G05D23/19
characterised by the use of electric means
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G05D23/30
Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
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G05D23/32
with provision for adjustment of the effect of the auxiliary heating device, e.g. a function of time
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