Improvements in Telephone Systems and in Apparatus for use in connection therewith

Improvements in Telephone Systems and in Apparatus for use in connection therewith

16,902. Watkins, W. D. July 30. Indicators or annunciators. -In a party line telephone system, the subscriber indicates his number when calling the exchange by energizing the electromagnet 13 through the line wires 11, 12 a number of times equal to his own designating number.

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Bibliographische Detailangaben
1. Verfasser: WILLIAM DAVID WATKINS
Format: Patent
Sprache:eng
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Zusammenfassung:16,902. Watkins, W. D. July 30. Indicators or annunciators. -In a party line telephone system, the subscriber indicates his number when calling the exchange by energizing the electromagnet 13 through the line wires 11, 12 a number of times equal to his own designating number.