Communications: electrical – Condition responsive indicating system – With particular coupling link
Patent
1987-04-13
1988-12-13
Swann, III, Glen R.
Communications: electrical
Condition responsive indicating system
With particular coupling link
34082572, 34082576, G08B 1322
Patent
active
047914092
ABSTRACT:
A security system for household appliances includes a signal source operating within a zone about the household. A receiver within the household appliances receives the signal and permits operability of the apparatus when the signal is received but which disables the appliance upon removal from the zone and away from the signal source.
REFERENCES:
patent: 4023138 (1977-05-01), Ballin
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