Wireless telephone system, telephone and method
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United States of America Patent
Stats
-
Jun 11, 2002
Issued Date -
N/A
app pub date -
Dec 29, 1998
filing date -
Feb 28, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A wireless telephone system, a wireless telephone for use in the system, and a method of using a wireless telephone capable of use for telephonic communications only for a predetermined limited period, within which limited period the sum of the durations of the telephonic communications reach the duration of the limited period, after which limited period the telephone is rendered inoperative, all utilize the transmission of an encrypted signal together with the transmission of selected telephonic communications to deter unauthorized use of the predetermined limited period.
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Family
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