公开(公告)号：US3657481A

公开(公告)日：1972-04-18

申请号：US3657481D

申请日：1970-03-17

Applicant: G V CONTROLS INC

Inventor： MASSIMO DONALD V DI

IPC: H04M1/677 ,  H04M17/02

CPC classification number: H04M1/677 ,  H04M17/023

Abstract: At a telephone pay station there is provided automatic dialing apparatus which renders that station usable without the deposit of a coin therein but only subject to telephone-address limitations imposed by preprogramming of that apparatus.

Abstract translation: 在电话付费站，提供自动拨号设备，其使得该站可以使用而不在其中存入硬币，但是仅受到该设备的预编程所施加的电话地址限制。