Devices characterised by the use of fluids

Full Title

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 fluids

5 direct subcodes

Child Classifications

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G01P 3/263
G01P 3/266
G01P 3/28 by using pumps
G01P 3/30 by using centrifugal forces of fluids
G01P 3/34 by using friction effects