PL284433A1 - Self-advancing roof supports - Google Patents

Self-advancing roof supports

Info

Publication number
PL284433A1
PL284433A1 PL28443390A PL28443390A PL284433A1 PL 284433 A1 PL284433 A1 PL 284433A1 PL 28443390 A PL28443390 A PL 28443390A PL 28443390 A PL28443390 A PL 28443390A PL 284433 A1 PL284433 A1 PL 284433A1
Authority
PL
Poland
Prior art keywords
self
roof supports
advancing roof
advancing
supports
Prior art date
Application number
PL28443390A
Other versions
PL162249B1 (en
Inventor
Wincenty Pretor
Zbigniew Cieslak
Marek Flak
Jan Dziuk
Karol Nowak
Henryk Zych
Original Assignee
Polmag Emag Przed Mechanizacji
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 Emag Przed Mechanizacji filed Critical Polmag Emag Przed Mechanizacji
Priority to PL28443390A priority Critical patent/PL162249B1/en
Publication of PL284433A1 publication Critical patent/PL284433A1/en
Publication of PL162249B1 publication Critical patent/PL162249B1/en

Links

PL28443390A 1990-03-22 1990-03-22 Self-advancing roof supports PL162249B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL28443390A PL162249B1 (en) 1990-03-22 1990-03-22 Self-advancing roof supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL28443390A PL162249B1 (en) 1990-03-22 1990-03-22 Self-advancing roof supports

Publications (2)

Publication Number Publication Date
PL284433A1 true PL284433A1 (en) 1991-09-23
PL162249B1 PL162249B1 (en) 1993-09-30

Family

ID=20050699

Family Applications (1)

Application Number Title Priority Date Filing Date
PL28443390A PL162249B1 (en) 1990-03-22 1990-03-22 Self-advancing roof supports

Country Status (1)

Country Link
PL (1) PL162249B1 (en)

Also Published As

Publication number Publication date
PL162249B1 (en) 1993-09-30

Similar Documents

Publication Publication Date Title
HU9204075D0 (en) Roof construction
GB2260558B (en) Mine roof supports
GB9018088D0 (en) Roof construction
GB2231610B (en) Mine roof supports
GB2239286B (en) Mine roof support
ZA912383B (en) Mine roof support
GB2236788B (en) Mine roof supports
GB2246583B (en) Roof structure
GB2235234B (en) Mine roof supports
GB9014178D0 (en) Mine roof supports
PL284303A1 (en) Lemniscate-type self-advancing roof supports
PL287425A1 (en) Self-advancing roof supports
PL288068A1 (en) Self-advancing roof supports
PL284433A1 (en) Self-advancing roof supports
PL52904Y1 (en) Self-advancing roof supports
GB2243394B (en) Mine roof supports
PL292437A1 (en) Self-advancing roof supports
PL295066A1 (en) Self-advancing roof supports
PL53803Y1 (en) Self-advancing roof supports
PL279007A1 (en) Self-advancing roof supports
PL280456A3 (en) Self-advancing roof supports
GB9013519D0 (en) Mine roof support
PL284089A1 (en) Self-advancing frame-type roof supports
PL273731A3 (en) Self-advancing roof supports
PL55052Y1 (en) Self-advancing roof supports