DIFF Subgroup
G01H 11/02 by magnetic means, e.g. reluctance
Introduced: January 1985
Full Title
Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties > by magnetic means, e.g. reluctance
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1985.
Child Classifications
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