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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1/00
Measuring force or stress, in general
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G01L1/16
using properties of piezoelectric devices
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G01L1/162
using piezoelectric resonators
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