Improvements relating to electrical timing apparatus

745,563. Stencil switches. METROPOLITAN-VICKERS ELECTRICAL CO.. Ltd. July 16, 1954 [July 16, 1953], No. 19785/53. Class 38(5) A switch for producing a series of electric impulses comprises a rotatable record surface provided with a number of indentations at selected intervals along a path on said su...

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Bibliographische Detailangaben

Hauptverfasser:	HAYNES FRANK GRENVILLE, DAWSON PETER HENRY, COYLE MICHAEL BARNARD
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRIC SWITCHES ELECTRICITY EMERGENCY PROTECTIVE DEVICES RELAYS SELECTORS
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