专利名称：HOSPITAL COMMUNICATION SYSTEM发明人：BENZ; LEO,KLEIN; DIETER,BAUER;
MANFRED,FIGEL; ALBERT,TREUTLIN; ROLF
申请号：US48717174申请日：19740710公开号：US3872440A公开日：19750318
摘要：Signals are transmitted in a hospital communication system between sub-unitsof room units and a central nurses station over a common high frequency line, each roomunit having an identifying high frequency assigned thereto which simultaneously
comprises the address signal of the room unit and the carrier for address signals of sub-units.
申请人：ALOIS ZETTLER ELEKTROTECHNISCHE FABRIK GMBH
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