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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
G01P 3/68

using optical means, i.e. using infrared, visible, or ultraviolet light (G01P3/80 takes precedence )

Introduced: September 1968

Title

Titles differ between systems:

IPC: using optical means, i.e. using infrared, visible, or ultraviolet light

CPC: using optical means, i.e. using infrared, visible, or ultraviolet light (G01P3/80 takes precedence )

Full Title

Full titles differ between systems:

IPC:

Measuring linear or angular speed; Measuring differences of linear or angular speeds > Devices characterised by the determination of the time taken to traverse a fixed distance > using optical means, i.e. using infrared, visible, or ultraviolet light

CPC:

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 determination of the time taken to traverse a fixed distance > using optical means, i.e. using infrared, visible, or ultraviolet light (G01P3/80 takes precedence )

Of 1 combined children, 0 exist in both systems.

1 codes are CPC-only extensions.

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