Carrier powered paging system
First Claim
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4. IN A PAGING SYSTEM, A CENTRAL STATION FOR TRANSMITTING PAGING SIGNALS HAVING A PLURALITY OF MODULATION FREQUENCIES AND A PLURALITY OF SIGNAL CARRIER FREQUENCIES, TRANSMITTER MEANS AT SAID CENTRAL STATION ADAPTED FOR RADIATING CARRIER ENERGY AT A PLURALITY OF SELECTABLE POWER CARRIER FREQUENCIES, A PLURALITY OF RECEIVERS EACH ADAPTED TO PROVIDE AN AUDIBLE PAGING SIGNAL IN RESPONSE TO ONLY A SINGLE COMBINATION OF ONE OF SAID PLURALITY OF MODULATION FREQUENCIES, ONE OF SAID PLURALITY OF SIGNAL CARRIER FREQUENCIES;
- AND SELECTOR MEANS AT SAID CENTRAL STATION FOR SELECTING THE COMBINATION OF MODULATION FREQUENCY, SIGNAL CARRIER FREQUENCY, AND POWER CARRIER FREQUENCY IN ORDER TO RENDER ONLY A SELECTED ONE OF SAID PLURALITY OF RECEIVERS OPERATIVE AND THEREBY PRODUCE SAID AUDIBLE PAGING SIGNAL.
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4 Claims
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4. IN A PAGING SYSTEM, A CENTRAL STATION FOR TRANSMITTING PAGING SIGNALS HAVING A PLURALITY OF MODULATION FREQUENCIES AND A PLURALITY OF SIGNAL CARRIER FREQUENCIES, TRANSMITTER MEANS AT SAID CENTRAL STATION ADAPTED FOR RADIATING CARRIER ENERGY AT A PLURALITY OF SELECTABLE POWER CARRIER FREQUENCIES, A PLURALITY OF RECEIVERS EACH ADAPTED TO PROVIDE AN AUDIBLE PAGING SIGNAL IN RESPONSE TO ONLY A SINGLE COMBINATION OF ONE OF SAID PLURALITY OF MODULATION FREQUENCIES, ONE OF SAID PLURALITY OF SIGNAL CARRIER FREQUENCIES;
- AND SELECTOR MEANS AT SAID CENTRAL STATION FOR SELECTING THE COMBINATION OF MODULATION FREQUENCY, SIGNAL CARRIER FREQUENCY, AND POWER CARRIER FREQUENCY IN ORDER TO RENDER ONLY A SELECTED ONE OF SAID PLURALITY OF RECEIVERS OPERATIVE AND THEREBY PRODUCE SAID AUDIBLE PAGING SIGNAL.
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Current AssigneeGilbert C. Nee
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Original AssigneeGilbert C. Nee
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InventorsNee, Gilbert C.
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Application NumberUS04/001,491Time in Patent Office1,464 DaysField of SearchUS Class Current340/7.32CPC Class CodesG08B 3/1066 with other provisions not e...
