US PATENT SUBCLASS 367 / 44
.~.~.~.~ Comb filters

Current as of: June, 1999
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367 /   HD   COMMUNICATIONS, ELECTRICAL: ACOUSTIC WAVE SYSTEMS AND DEVICES

14  DF  SEISMIC PROSPECTING {4}
37  DF  .~ Land-reflection type {6}
38  DF  .~.~ Signal analysis and/or correction {15}
43  DF  .~.~.~ Filters {3}
44.~.~.~.~ Comb filters

DEFINITION

Classification: 367/44

Comb filters:

(under subclass 43) Subject matter wherein a plurality of selected signals or constituent parts of complex signals may be attenuated or separated simultaneously.