U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Telephone system and method for providing directory assistance/intercept information

Patent 4053949 Issued on October 11, 1977. Estimated Expiration Date: Icon_subject October 11, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

2899503

2925472

2968700

3346853

3586780

3854124

Inventors

Application

No. 05/681035 filed on 04/28/1976

US Classes:

379/114.01, Call charge metering or monitoring379/122With display

Examiners

Primary: Zache, Raulfe B.

Attorney, Agent or Firm

Abstract

A system for use with a plurality of directory assistance or intercept telephone operator positions, in which each position has means for monitoring a plurality of line conductor pairs and includes first and second units for storing data representative of the status of a plurality of telephone numbers. A keyboard is collocated with the operator position for addressing either storage unit with respect to a given telephone number, and an output device, such as a cathode ray tube, is collocated with the operator's position and the addressing means for receiving an output from the storage unit and providing an indication of the status of the telephone number. The operator, or alternatively a number translator, operates between each line pair and the keyboard for providing an input to the addressing means representative of each called telephone number through the corresponding line pair. A switch is also provided between all of the keyboard-cathode ray tube combinations and both storage units for switching each combination between the first and second units. A circuit is also included for entering charging information for directory assistance calls.

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