US PATENT SUBCLASS 367 / 66
.~.~.~.~ Analog/digital compatible systems


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}
65  DF  .~.~.~ Gain control {2}
66.~.~.~.~ Analog/digital compatible systems


DEFINITION

Classification: 367/66

Analog digital compatible systems:

(under subclass 65) Subject matter which may be applicable to

the amplification or attenuation of either digital or analog signals.

(1) Note. Disclosures classifiable in this subclass may include specific embodiments limited to, for example, analog signals but which disclosures are comprehensive enough to be applicable to digital signal gain control as well.