DIFF Subgroup
G01R 7/18 with iron core magnetically coupling fixed and moving coils
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Instruments capable of converting two or more currents or voltages into a single mechanical displacement > for forming product > having both fixed and moving coils, i.e. dynamometers > with iron core magnetically coupling fixed and moving coils
CPC:
Instruments capable of converting two or more currents or voltages into a single mechanical displacement (G01R9/00 takes precedence) > for forming product > having both fixed and moving coils, i.e. dynamometers > with iron core magnetically coupling fixed and moving coils
No child classifications to compare. This is a leaf node in both IPC and CPC.