DIFF Subgroup
G01V 1/20 Arrangements of receiving elements, e.g. geophone pattern
Introduced: September 1968
Full Title
Seismology; Seismic or acoustic prospecting or detecting > Receiving elements for seismic signals; Arrangements or adaptations of receiving elements > Arrangements of receiving elements, e.g. geophone pattern
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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