US PATENT SUBCLASS 379 / 93.27
.~.~.~ Alphanumeric

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

90.01  DF  TELEPHONE LINE OR SYSTEM COMBINED WITH DIVERSE ELECTRICAL SYSTEM OR SIGNALLING (E.G., COMPOSITE) {8}
93.01  DF  .~ Having transmission of a digital message signal over a telephone line {9}
93.26  DF  .~.~ By voice frequency signal (e.g., tone code) {3}
93.27.~.~.~ Alphanumeric

DEFINITION

Classification: 379/93.27

Alphanumeric:

(under subclass 93.26) Subject matter including a structure particularly adapted for recognition of tone codes generated via dual-tone, multi-frequency signals into letters or numbers.

SEE OR SEARCH THIS CLASS, SUBCLASS:

93.18, for display of alphanumeric characters generated using tone code recognition.