US5754952 Patents
The use of stolen mobile identification number (MEN) and electronic serial number (ESN) information to fraudulently place wireless calls is prevented by having the switches of
8 claims. 27,975 characters of text.
US5754952 Patents
The use of stolen mobile identification number (MEN) and electronic serial number (ESN) information to fraudulently place wireless calls is prevented by having the switches of
8 claims. 27,975 characters of text.