Telephone toll service with advertising
Patent 4850007 Issued on July 18, 1989. Estimated Expiration Date: 
June 25, 2007. 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.
June 25, 2007. 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 3111561 3876840 Data transmission systems (using internal systems equipment, services and procedures of telephone companies) System and method for transmitting messages to a telephone set through the subscriber's line in a telephone system Patent #: 4510349 InventorsAssigneeApplicationNo. 07/066917 filed on 06/25/1987US Classes:379/114.13, Advertisement379/114.01, Call charge metering or monitoring379/114.25, 1-900 billing379/84, At switching facility (e.g., central office, switchboard)379/88.24By generated toneExaminersPrimary: Faber, AlanAssistant: Tomassini, James E. Attorney, Agent or FirmInternational ClassesH04Q 3/00 (20060101)H04M 3/487 (20060101) AbstractThere is disclosed a system for providing an economical telephone toll service in which a telephone subscriber selects the economical service by, for example, sending an appropriate signal, and then dials his directory assistance call or other telephone toll call. After the caller's options are determined and typically before signaling for the call is commenced, a recorded-announcement of an aural or visual nature is connected to the subscriber's line, the announcement consisting of at least one advertisement. The advertisements are selected from a databank according to some predetermined technique of selection, which may include any number of factors or features to make the service attractive to subscribers and of a nature to make the service also sufficiently rewarding to advertisers. After the initial delay, usually after the advertising announcement is completed, the toll call and/or directory assistance call is processed as usual but at a reduced rate of charge or with automatic credit being given to the customer's account.Other References
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