PL273305A1 - Steel arching - Google Patents

Steel arching

Info

Publication number
PL273305A1
PL273305A1 PL27330588A PL27330588A PL273305A1 PL 273305 A1 PL273305 A1 PL 273305A1 PL 27330588 A PL27330588 A PL 27330588A PL 27330588 A PL27330588 A PL 27330588A PL 273305 A1 PL273305 A1 PL 273305A1
Authority
PL
Poland
Prior art keywords
arching
steel
steel arching
Prior art date
Application number
PL27330588A
Other versions
PL158650B1 (en
Inventor
Ryszard Ogrodnik
Wilhelm Kirsz
Maciej Nikiel
Kazimierz Rulka
Tadeusz Napieracz
Andrzej Chmielnik
Tadeusz Werschner
Zbigniew Gryszkiewicz
Roman Brawanski
Original Assignee
Huta Labedy
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 Huta Labedy filed Critical Huta Labedy
Priority to PL27330588A priority Critical patent/PL158650B1/en
Publication of PL273305A1 publication Critical patent/PL273305A1/en
Publication of PL158650B1 publication Critical patent/PL158650B1/en

Links

PL27330588A 1988-06-23 1988-06-23 Closed square roof support PL158650B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL27330588A PL158650B1 (en) 1988-06-23 1988-06-23 Closed square roof support

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL27330588A PL158650B1 (en) 1988-06-23 1988-06-23 Closed square roof support

Publications (2)

Publication Number Publication Date
PL273305A1 true PL273305A1 (en) 1989-12-27
PL158650B1 PL158650B1 (en) 1992-09-30

Family

ID=20042902

Family Applications (1)

Application Number Title Priority Date Filing Date
PL27330588A PL158650B1 (en) 1988-06-23 1988-06-23 Closed square roof support

Country Status (1)

Country Link
PL (1) PL158650B1 (en)

Also Published As

Publication number Publication date
PL158650B1 (en) 1992-09-30

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