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Priority to DD173681ApriorityCriticalpatent/DD106917A1/xx
Priority to DE2423046Aprioritypatent/DE2423046B2/de
Priority to CH719074Aprioritypatent/CH571749A5/xx
Priority to SE7408121Aprioritypatent/SE389213B/xx
Publication of DD106917A1publicationCriticalpatent/DD106917A1/xx
Priority to FR7427927Aprioritypatent/FR2245033B1/fr
G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
G08B17/00—Fire alarms; Alarms responsive to explosion
G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
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Chemical & Material Sciences
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Analytical Chemistry
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Business, Economics & Management
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Emergency Management
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Physics & Mathematics
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General Physics & Mathematics
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Other Investigation Or Analysis Of Materials By Electrical Means
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