Radiotelephone subscriber unit having a generic phone number
Patent 5797101 Issued on August 18, 1998. Estimated Expiration Date: 
January 31, 2016. 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.
January 31, 2016. 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 ReferencesRadio transceiver having fixed calling capacity Radiotelephone for automatically dialing remotely programmed number upon call termination and without user operation Spring assembly for seating and bedding Patent #: 5535460 InventorsAssigneeApplicationNo. 594218 filed on 01/31/1996US Classes:455/551, Number assignment module (NAM) detail379/111, WITH USAGE MEASUREMENT (E.G., CALL OR TRAFFIC REGISTER)455/405, Usage measurement455/407, At subscriber unit455/409, Rental455/565Restrictive dialing circuitryExaminersPrimary: Bost, Dwayne D.Assistant: Maung, Nay Attorney, Agent or FirmInternational ClassH04Q 007/20AbstractA radiotelephone subscriber unit (101) comprises a memory unit (259) having stored therein an identification sequence including a phone number (MIN1 and MIN2) and an electronic serial number (ESN). The phone number (MIN1 and MIN2) is common to at least one other portable radiotelephone subscriber unit in a radiotelephone system (102) The electronic serial number (ESN) is unique to the portable radiotelephone subscriber unit (101) in the radiotelephone system.Other References
Field of SearchSecurity or fraud preventionPrivacy, lock-out, or authentication Subscriber equipment Control or access channel scanning Number assignment module (NAM) detail Restrictive dialing circuitry Auto-dialing or repertory dialing (e.g., using bar code, etc.) Usage measurement Billing At subscriber unit At remote station Rental WITH USAGE MEASUREMENT (E.G., CALL OR TRAFFIC REGISTER) | |
