DIFF Subgroup
G01P 3/80 using auto-correlation or cross-correlation detection means
Introduced: January 1985
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 auto-correlation or cross-correlation detection means
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 auto-correlation or cross-correlation detection means
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Child Classifications
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