DIFF Subgroup
G01R 13/04 for producing permanent records
Introduced: September 1968
Full Title
Arrangements for displaying electric variables or waveforms > for producing permanent records
IPC and CPC are identically structured here. All 5 subcodes exist in both systems.
2 shared codes have differing titles between IPC and CPC.
Child Classifications
Navigate with arrow keys, Enter to open
- G01R 13/06 Modifications for recording transient disturbances, e.g. by starting or accelerating a recording medium IPC+CPC Available in IPC and CPC
- G01R 13/08 Electromechanical recording systems using a mechanical direct-writing method IPC+CPC Available in IPC and CPC
- G01R 13/12 Chemical recording, e.g. clydonographs (G01R13/14 takes precedence) IPC+CPC Available in IPC and CPC