Radio-physiological method and means
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10. A RESPONDER UNIT IN THE FORM OF AN INTROMITTENT CAPSULE COMPRISING A SEALED CASING OF INSULATING MATERIAL, A PIEZO-ELECTRIC CRYSTAL MOUNTED IN SAID SEALED CASING, AND SIGNAL RECEIVING MEANS WITHIN SAID CASING CONNECTED WITH SAID CRYSTAL AND FORMING A RESONATING CIRCUIT WITH SAID CRYSTAL.
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10 Claims
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10. A RESPONDER UNIT IN THE FORM OF AN INTROMITTENT CAPSULE COMPRISING A SEALED CASING OF INSULATING MATERIAL, A PIEZO-ELECTRIC CRYSTAL MOUNTED IN SAID SEALED CASING, AND SIGNAL RECEIVING MEANS WITHIN SAID CASING CONNECTED WITH SAID CRYSTAL AND FORMING A RESONATING CIRCUIT WITH SAID CRYSTAL.
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