Survey of radio audience
Patent 4718106 Issued on January 5, 1988. Estimated Expiration Date: 
May 12, 2006. 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.
May 12, 2006. 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 2766374 3803349 Television audience measuring system Television monitoring device Automatic system and method for monitoring and storing radio user listening habits Meter for passively logging the presence and identity of TV viewers Patent #: 4626904 InventorApplicationNo. 06/862107 filed on 05/12/1986US Classes:455/2.01, AUDIENCE SURVEY OR PROGRAM DISTRIBUTION USE ACCOUNTING379/92.04Having subscriber station equipmentExaminersPrimary: Griffin, Robert L.Assistant: Seidenglanz, Elissa Attorney, Agent or FirmInternational ClassH04H 9/00 (20060101)AbstractA technique for surveying an audience. A portable signal detector unit picks up audible sounds reproduced by a radio set from signals transmitted by a given radio station. Among the broadcast signals is one unique to that particular station. The unit includes means capable of identifying that signal to automatically electronically record the fact that the station is being listened to by the carrier of the unit. | |
