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.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IndividualfiledCriticalIndividual
Priority to FR7103549ApriorityCriticalpatent/FR2124074A1/fr
Priority to DE19722204801prioritypatent/DE2204801A1/de
Priority to GB519672Aprioritypatent/GB1387144A/en
Publication of FR2124074A1publicationCriticalpatent/FR2124074A1/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
Landscapes
Chemical & Material Sciences
(AREA)
Analytical Chemistry
(AREA)
Business, Economics & Management
(AREA)
Emergency Management
(AREA)
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Other Investigation Or Analysis Of Materials By Electrical Means
(AREA)
Fire-Detection Mechanisms
(AREA)
Fire Alarms
(AREA)
Investigating Or Analyzing Materials Using Thermal Means
(AREA)