US PATENT SUBCLASS 367 / 132
.~ Analog speech communication

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

131  DF  UNDERWATER SYSTEM {3}
132.~ Analog speech communication

DEFINITION

Classification: 367/132

Analog speech communication:

(under subclass 131) Subject matter in which continuous acoustic wave signals having an amplitude, phase, or frequency proportional to voice modulations are transmitted and/or received.