AT180920B - Extension frame, preferably for the flexible ring-shaped or arched extension of pit sections, using channel profiles with congruent cross-sections - Google Patents

Extension frame, preferably for the flexible ring-shaped or arched extension of pit sections, using channel profiles with congruent cross-sections

Info

Publication number
AT180920B
AT180920B AT180920DA AT180920B AT 180920 B AT180920 B AT 180920B AT 180920D A AT180920D A AT 180920DA AT 180920 B AT180920 B AT 180920B
Authority
AT
Austria
Prior art keywords
sections
extension
shaped
flexible ring
pit
Prior art date
Application number
Other languages
German (de)
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
Application granted granted Critical
Publication of AT180920B publication Critical patent/AT180920B/en

Links

AT180920D 1951-03-28 1951-03-28 Extension frame, preferably for the flexible ring-shaped or arched extension of pit sections, using channel profiles with congruent cross-sections AT180920B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT180920T 1951-03-28

Publications (1)

Publication Number Publication Date
AT180920B true AT180920B (en) 1955-01-25

Family

ID=3661020

Family Applications (1)

Application Number Title Priority Date Filing Date
AT180920D AT180920B (en) 1951-03-28 1951-03-28 Extension frame, preferably for the flexible ring-shaped or arched extension of pit sections, using channel profiles with congruent cross-sections

Country Status (1)

Country Link
AT (1) AT180920B (en)

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