DIFF Main Group
F23Q 23/00 Testing of ignition installations (peculiar to internal-combustion engines F02P17/00)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Testing of ignition installations
CPC: Testing of ignition installations (peculiar to internal-combustion engines F02P17/00)
Full Title
Full titles differ between systems:
IPC:
Testing of ignition installations
CPC:
Testing of ignition installations (peculiar to internal-combustion engines F02P17/00)
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- F23Q 23/08 Testing of components (of sparking plugs H01T13/58, F02P17/12) IPC+CPC Available in IPC and CPC