DIFF Main Group
H05F 7/00 Use of naturally-occurring electricity,
Introduced: September 1968
Title
Titles differ between systems:
IPC: Use of naturally-occurring electricity
CPC: Use of naturally-occurring electricity,
Full Title
Full titles differ between systems:
IPC:
Use of naturally-occurring electricity
CPC:
Use of naturally-occurring electricity,
No child classifications to compare. This is a leaf node in both IPC and CPC.