DIFF Subgroup
G04F 13/04 using electrochemical means
Introduced: July 1974
Full Title
Full titles differ between systems:
IPC:
Apparatus for measuring unknown time intervals by means not provided for in groups > using electrochemical means
CPC:
Apparatus for measuring unknown time intervals by means not provided for in groups G04F5/00 - G04F10/00 > using electrochemical means
No child classifications to compare. This is a leaf node in both IPC and CPC.