PL269909A1 - Self-advancing roof supports - Google Patents

Self-advancing roof supports

Info

Publication number
PL269909A1
PL269909A1 PL26990987A PL26990987A PL269909A1 PL 269909 A1 PL269909 A1 PL 269909A1 PL 26990987 A PL26990987 A PL 26990987A PL 26990987 A PL26990987 A PL 26990987A PL 269909 A1 PL269909 A1 PL 269909A1
Authority
PL
Poland
Prior art keywords
self
roof supports
advancing roof
advancing
supports
Prior art date
Application number
PL26990987A
Other versions
PL156426B1 (en
Inventor
Jan Dziuk
Henryk Trembaczewski
Hernyk Bierzunski
Original Assignee
Polmag
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 Polmag filed Critical Polmag
Priority to PL26990987A priority Critical patent/PL156426B1/en
Publication of PL269909A1 publication Critical patent/PL269909A1/en
Publication of PL156426B1 publication Critical patent/PL156426B1/en

Links

PL26990987A 1987-12-30 1987-12-30 Self-advancing roof supports PL156426B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL26990987A PL156426B1 (en) 1987-12-30 1987-12-30 Self-advancing roof supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL26990987A PL156426B1 (en) 1987-12-30 1987-12-30 Self-advancing roof supports

Publications (2)

Publication Number Publication Date
PL269909A1 true PL269909A1 (en) 1989-07-10
PL156426B1 PL156426B1 (en) 1992-03-31

Family

ID=20039952

Family Applications (1)

Application Number Title Priority Date Filing Date
PL26990987A PL156426B1 (en) 1987-12-30 1987-12-30 Self-advancing roof supports

Country Status (1)

Country Link
PL (1) PL156426B1 (en)

Also Published As

Publication number Publication date
PL156426B1 (en) 1992-03-31

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