US PATENT SUBCLASS 379 / 223
.~.~ With operator assistance


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

219  DF  PLURAL EXCHANGE NETWORK OR INTERCONNECTION {6}
222  DF  .~ Toll center {1}
223.~.~ With operator assistance


DEFINITION

Classification: 379/223

With operator assistance:

(under subclass 222) Subject matter where the toll center has an operator to assist in completion of toll calls.