FR838927A - Warning device for devices detecting the presence of gas - Google Patents

Warning device for devices detecting the presence of gas

Info

Publication number
FR838927A
FR838927A FR838927DA FR838927A FR 838927 A FR838927 A FR 838927A FR 838927D A FR838927D A FR 838927DA FR 838927 A FR838927 A FR 838927A
Authority
FR
France
Prior art keywords
gas
warning device
devices detecting
detecting
devices
Prior art date
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.)
Expired
Application number
Other languages
French (fr)
Inventor
Paul Sewerin
Heinz Sewerin
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 filed Critical
Application granted granted Critical
Publication of FR838927A publication Critical patent/FR838927A/en
Expired legal-status Critical Current

Links

FR838927D 1938-06-04 1938-06-04 Warning device for devices detecting the presence of gas Expired FR838927A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR838927T 1938-06-04

Publications (1)

Publication Number Publication Date
FR838927A true FR838927A (en) 1939-03-20

Family

ID=9299295

Family Applications (1)

Application Number Title Priority Date Filing Date
FR838927D Expired FR838927A (en) 1938-06-04 1938-06-04 Warning device for devices detecting the presence of gas

Country Status (1)

Country Link
FR (1) FR838927A (en)

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