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PCE
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DIFF Subgroup
G01S 3/86

with means for eliminating undesired waves, e.g. disturbing noises

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 > with means for eliminating undesired waves, e.g. disturbing noises

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 > with means for eliminating undesired waves, e.g. disturbing noises

No child classifications to compare. This is a leaf node in both IPC and CPC.