DIFF Subgroup
G01M 3/40 by using electric means, e.g. by observing electric discharges
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Investigating fluid tightness of structures > by using electric means, e.g. by observing electric discharges
CPC:
Investigating fluid-tightness of structures > by using electric means, e.g. by observing electric discharges
No child classifications to compare. This is a leaf node in both IPC and CPC.