DIFF Subgroup
G01R 13/30 Circuits for inserting reference markers, e.g. for timing, for calibrating, for frequency marking
Introduced: September 1968
Full Title
Arrangements for displaying electric variables or waveforms > Cathode-ray oscilloscopes > Circuits therefor > Circuits for inserting reference markers, e.g. for timing, for calibrating, for frequency marking
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
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