DIFF Subgroup
G01R 19/12 Measuring rate of change
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Arrangements for measuring currents or voltages or for indicating presence or sign thereof > Measuring rate of change
CPC:
Arrangements for measuring currents or voltages or for indicating presence or sign thereof (G01R5/00 takes precedence; for measuring bioelectric currents or voltages A61B5/24) > Measuring rate of change
No child classifications to compare. This is a leaf node in both IPC and CPC.