Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RFT MESSELEKTRONIK OTTO SCHON DL
RFT MESSELEKTRONIK DRESDEN VEB
Original Assignee
RFT MESSELEKTRONIK OTTO SCHON DL
RFT MESSELEKTRONIK DRESDEN VEB
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Publication date
Application filed by RFT MESSELEKTRONIK OTTO SCHON DL, RFT MESSELEKTRONIK DRESDEN VEBfiledCriticalRFT MESSELEKTRONIK OTTO SCHON DL
Publication of FR2245033A1publicationCriticalpatent/FR2245033A1/fr
Application grantedgrantedCritical
Publication of FR2245033B1publicationCriticalpatent/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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