BE611237A - Self-closing blanking cover for ventilation ducts and emergency exits of shelters, especially underground - Google Patents

Self-closing blanking cover for ventilation ducts and emergency exits of shelters, especially underground

Info

Publication number
BE611237A
BE611237A BE611237A BE611237A BE611237A BE 611237 A BE611237 A BE 611237A BE 611237 A BE611237 A BE 611237A BE 611237 A BE611237 A BE 611237A BE 611237 A BE611237 A BE 611237A
Authority
BE
Belgium
Prior art keywords
shelters
self
blanking cover
ventilation ducts
emergency exits
Prior art date
Application number
BE611237A
Other languages
French (fr)
Original Assignee
Bochumer Eisen Heintzmann
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 Bochumer Eisen Heintzmann filed Critical Bochumer Eisen Heintzmann
Publication of BE611237A publication Critical patent/BE611237A/en

Links

BE611237A 1960-12-07 1961-12-07 Self-closing blanking cover for ventilation ducts and emergency exits of shelters, especially underground BE611237A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE611237X 1960-12-07

Publications (1)

Publication Number Publication Date
BE611237A true BE611237A (en) 1962-06-07

Family

ID=39470511

Family Applications (1)

Application Number Title Priority Date Filing Date
BE611237A BE611237A (en) 1960-12-07 1961-12-07 Self-closing blanking cover for ventilation ducts and emergency exits of shelters, especially underground

Country Status (1)

Country Link
BE (1) BE611237A (en)

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