Patent classifications
G
PHYSICS
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G01
MEASURING; TESTING
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G01L
MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
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G01L21/10
by measuring variations in the heat conductivity of the medium, the pressure of which is to be measured
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G01L21/12
measuring changes in electric resistance of measuring members, e.g. of filaments; Vacuum gauges of the Pirani type
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