US PATENT SUBCLASS 379 / FOR 119
.~.~ By voice frequency signal (e.g., tone code) (379/97)


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

Internet Version by PATENTEC © 1999      Terms of Use



379 /   HD   TELEPHONIC COMMUNICATIONS

FOR 112  DF  TELEPHONE LINE OR SYSTEM COMBINED WITH DIVERSE ELECTRICAL SYSTEM OR SIGNALLING (E.G., COMPOSITE) (379/90) {8}
FOR 115  DF  .~ With transmission of a digital message signal over a telephone line (379/93) {4}
FOR 119.~.~ By voice frequency signal (e.g., tone code) (379/97) {2}
FOR 120  DF  .~.~.~> By modulated audio tone (379/98)
FOR 121  DF  .~.~.~> Having acoustic link (379/99)


DEFINITION

Classification: 379/FOR.119

By voice frequency signal (e.g., tone code):

Foreign art collection wherein the pulse or digital data signal is specifically described as converted into one or more tones lying within the audible frequency spectrum.