DIFF Subgroup
G01R 33/24 for measuring direction or magnitude of magnetic fields or magnetic flux
Introduced: January 1985
Full Title
Full titles differ between systems:
IPC:
Arrangements or instruments for measuring magnetic variables > involving magnetic resonance > for measuring direction or magnitude of magnetic fields or magnetic flux
CPC:
Arrangements or instruments for measuring magnetic variables > involving magnetic resonance (medical aspects A61B5/055; magnetic resonance gyrometers G01C19/60) > for measuring direction or magnitude of magnetic fields or magnetic flux
CPC subdivides this area 3x more granularly than IPC with 2 additional codes.
2 codes are CPC-only extensions.
IPC defines codes here since 1985.
Child Classifications
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