Telecommunications – Radiotelephone system – Emergency or alarm communication
Patent
1997-07-16
2000-09-05
Hudspeth, David R.
Telecommunications
Radiotelephone system
Emergency or alarm communication
455435, H04M 1500
Patent
active
061155977
ABSTRACT:
The present invention teaches an economical disposable emergency cellular phone. A further object of the invention is a new technique for having a large number of cellular phones share the same small group of access numbers and serial numbers in order to reduce the monthly charges to zero for the end consumer.
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SOS Phone User Guide SOS Wireless Communications.
Kroll Braden W.
Kroll Mark W.
Hudspeth David R.
Sofocleous M. David
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