DIFF Subgroup
G01R 29/18 Indicating phase sequence; Indicating synchronism
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Arrangements for measuring or indicating electric quantities not covered by groups > Indicating phase sequence; Indicating synchronism
CPC:
Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00 > Indicating phase sequence; Indicating synchronism
No child classifications to compare. This is a leaf node in both IPC and CPC.