DIFF Subgroup
G01L 11/04 by acoustic means
Introduced: January 1995
Full Title
Full titles differ between systems:
IPC:
Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group or > by acoustic means
CPC:
Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 > by acoustic means
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1995.
Child Classifications
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