DIFF Subgroup
G01P 3/04 by comparing two speeds
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Measuring linear or angular speed; Measuring differences of linear or angular speeds > Devices characterised by the use of mechanical means > by comparing two speeds
CPC:
Measuring linear or angular speed; Measuring differences of linear or angular speeds (G01P5/00 - G01P11/00 take precedence; ; counting mechanisms G06M) > Devices characterised by the use of mechanical means > by comparing two speeds
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
Child Classifications
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