PL302697A1 - Self-advancing roof supports - Google Patents

Self-advancing roof supports

Info

Publication number
PL302697A1
PL302697A1 PL30269794A PL30269794A PL302697A1 PL 302697 A1 PL302697 A1 PL 302697A1 PL 30269794 A PL30269794 A PL 30269794A PL 30269794 A PL30269794 A PL 30269794A PL 302697 A1 PL302697 A1 PL 302697A1
Authority
PL
Poland
Prior art keywords
self
roof supports
advancing roof
advancing
supports
Prior art date
Application number
PL30269794A
Other versions
PL172489B1 (en
Inventor
Krystian Zajac
Jozef Szafarczyk
Adam Nowakowski
Jan Sliwa
Sylwester Fraczek
Robert Musiol
Jacek Barczyk
Eugeniusz Franke
Original Assignee
Rybnicka Sp Weglowa Sa Kopalni
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 Rybnicka Sp Weglowa Sa Kopalni filed Critical Rybnicka Sp Weglowa Sa Kopalni
Priority to PL30269794A priority Critical patent/PL172489B1/en
Publication of PL302697A1 publication Critical patent/PL302697A1/en
Publication of PL172489B1 publication Critical patent/PL172489B1/en

Links

PL30269794A 1994-03-18 1994-03-18 Self-advancing roof supports PL172489B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL30269794A PL172489B1 (en) 1994-03-18 1994-03-18 Self-advancing roof supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL30269794A PL172489B1 (en) 1994-03-18 1994-03-18 Self-advancing roof supports

Publications (2)

Publication Number Publication Date
PL302697A1 true PL302697A1 (en) 1995-10-02
PL172489B1 PL172489B1 (en) 1997-09-30

Family

ID=20062021

Family Applications (1)

Application Number Title Priority Date Filing Date
PL30269794A PL172489B1 (en) 1994-03-18 1994-03-18 Self-advancing roof supports

Country Status (1)

Country Link
PL (1) PL172489B1 (en)

Also Published As

Publication number Publication date
PL172489B1 (en) 1997-09-30

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Legal Events

Date Code Title Description
LAPS Decisions on the lapse of the protection rights

Effective date: 20060318