US PATENT SUBCLASS 367 / 43
.~.~.~ Filters

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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.~.~.~ Filters {3}
44  DF  .~.~.~.~> Comb filters
45  DF  .~.~.~.~> Adaptive filters
46  DF  .~.~.~.~> Inverse filters

DEFINITION

Classification: 367/43

Filters:

(under subclass 38) Subject matter including means to attenuate and/or separate selected signals or constituent parts of complex signals.