Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements ; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means (measuring differences of two or more pressure values G01L13/00; measuring two or more pressure values simultaneously G01L15/00)

Child Classifications

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• G01L 9/0001 +5 CPC CPC only CPC only
• G01L 9/0026 +4 CPC CPC only CPC only
• G01L 9/0033 +4 CPC CPC only CPC only
• G01L 9/0041 +6 CPC CPC only CPC only
• G01L 9/0082 +4 CPC CPC only CPC only
• G01L 9/0089 CPC only CPC only
• G01L 9/0091 +4 CPC CPC only CPC only
• G01L 9/0098 CPC only CPC only
• G01L 9/02 by making use of variations in ohmic resistance, e.g. of potentiometers +1 CPC IPC+CPC Available in IPC and CPC
• G01L 9/08 by making use of piezoelectric devices +1 CPC IPC+CPC Available in IPC and CPC
• G01L 9/10 by making use of variations in inductance +1 CPC IPC+CPC Available in IPC and CPC
• G01L 9/12 by making use of variations in capacitance +1 CPC IPC+CPC Available in IPC and CPC
• G01L 9/14 involving the displacement of magnets, e.g. electromagnets IPC+CPC Available in IPC and CPC
• G01L 9/16 by making use of variations in the magnetic properties of material resulting from the application of stress IPC+CPC Available in IPC and CPC
• G01L 9/18 by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electric potential is produced or varied upon the application of stress IPC+CPC Available in IPC and CPC