04860341 is referenced by 126 patents and cites 11 patents.

A mobile radiotelephone call synchronization method and apparatus for a radiotelephone system utilizing a credit card for payment of calls is disclosed. Call access is denied a mobile unit until the user runs his credit card through a card reader to input credit card information. After checking list having a valid and invalid I.D., and checking the expiration date stored at the mobile telephone, the information is communicated by the mobile unit to a registration computer for approval. If approval is granted, the mobile unit is enabled for the user to make one or more radiotelephone calls.

Title
Radiotelephone credit card call approval synchronization
Application Number
57402
Publication Number
4860341
Application Date
February 13, 1989
Publication Date
August 22, 1989
Inventor
Joseph L Kowalski
Fox River Grove
IL, US
Francis P Tobolski Jr
Algonquin
IL, US
Robert F D Avello
Hoffman Estates
IL, US
Agent
Rolland R Hackbart
Raymond A Jenski
Assignee
Motorola
IL, US
IPC
H04M 1/57
View Original Source