Patent classifications
G
PHYSICS
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G01
MEASURING; TESTING
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G01B
MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
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17/00
Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
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G01B17/04
for measuring the deformation in a solid, e.g. by vibrating string
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