DIFF Subgroup
G01P 5/10 by measuring thermal variables
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft > by measuring thermal variables
CPC:
Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft (application of speed-measuring devices for measuring volume of fluid G01F) > by measuring thermal variables
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
Child Classifications
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