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PCE
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DIFF Subgroup
G01S 3/80

using ultrasonic, sonic or infrasonic waves

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic or electromagnetic waves, or particle emission, not having a directional significance, are being received > using ultrasonic, sonic or infrasonic waves

CPC:

Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic or electromagnetic waves, or particle emission, not having a directional significance, are being received (position-fixing by co-ordinating a plurality of determinations of direction or position lines G01S5/00) > using ultrasonic, sonic or infrasonic waves

Of 7 combined children, 5 exist in both systems.

2 codes are CPC-only extensions.

Child Classifications

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  • G01S 3/8003 CPC only CPC only
  • G01S 3/8006 CPC only CPC only
  • G01S 3/801 Details since 1990 IPC+CPC Available in IPC and CPC
  • G01S 3/82 with means for adjusting phase or compensating for time-lag errors IPC+CPC Available in IPC and CPC
  • G01S 3/84 with indication presented on cathode-ray tubes IPC+CPC Available in IPC and CPC
  • G01S 3/86 with means for eliminating undesired waves, e.g. disturbing noises IPC+CPC Available in IPC and CPC