73364852
May 17, 1982
AN AUTOMATIC TELEPHONE NUMBER DIALING DEVICE CAPABLE OF PROVIDING AUTO MATIC ACCESS TO THE TELECOMMUNICATIONS NETWORKS OF TELECOMMUNICATONS C OMMON CARRIERS OTHER THAN TELEPHONE OPERATING COMPANIES (WHETHER AT&T- AFFILLIATED OR "INDEPENDENT") WHEN ATTACHED TO THE TELEPHONE TRUNK LIN ES CONNECTING TO A KEY TELEPHONE SYSATEM ("KSU") OR PRIVARTE BRANCH EX CHANGE ("PBX")
Telecommunications