FR827856A - Perfectionnements aux dispositifs de détection de variations de température utilisables, notamment, comme avertisseurs automatiques d'incendie
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Perfectionnements aux dispositifs de détection de variations de température utilisables, notamment, comme avertisseurs automatiques d'incendie
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Compagnie des Telephones Thomson Houston
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Compagnie des Telephones Thomson Houston
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G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
G08B17/00—Fire alarms; Alarms responsive to explosion
G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
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Emergency Management
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FR827856D1937-01-181937-01-18Perfectionnements aux dispositifs de détection de variations de température utilisables, notamment, comme avertisseurs automatiques d'incendie
ExpiredFR827856A
(fr)