DIFF Subgroup
G01D 9/20 the recording element, e.g. stylus, being controlled in accordance with time and the recording medium, e.g. paper roll, being controlled in accordance with the variable
Introduced: September 1968
Full Title
Recording measured values > Producing one or more recordings of the values of a single variable > the recording element, e.g. stylus, being controlled in accordance with time and the recording medium, e.g. paper roll, being controlled in accordance with the variable
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
Child Classifications
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- G01D 9/24 recording occurring at separated intervals, e.g. by chopper bar IPC+CPC Available in IPC and CPC