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Indent Level
Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised
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CPC
COOPERATIVE PATENT CLASSIFICATION
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DIGITAL FLUID-PRESSURE COMPUTING DEVICES [2013‑01]
NOTE
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This subclass includes all devices in which at least one computing function is performed by hydraulic or pneumatic means

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Details, e.g. functional units (individual logic elements F15C; valves F16K) [2013‑01]
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G06D 1/02
.
having at least one moving part, e.g. spool valve [2013‑01]
G06D 1/04
. .
Adding; Subtracting [2013‑01]
G06D 1/06
. .
Multiplying; Dividing [2013‑01]
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G06D 1/08
.
having no moving parts [2013‑01]
G06D 1/10
. .
Adding; Subtracting [2013‑01]
G06D 1/12
. .
Multiplying; Dividing [2013‑01]
G06D 3/00
Computing devices characterised by the interrelationship of the functional units and having at least one moving part [2013‑01]
G06D 5/00
Computing devices characterised by the interrelationship of the functional units and having no moving parts [2013‑01]
G06D 7/00
Computing devices characterised by the combination of hydraulic or pneumatic functional elements with at least one other type of functional element [2013‑01]
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Last Modified: 10/10/2013