PL280561A1 - Shifter for alternately shifting either of two adjacent double-prop roof support units - Google Patents

Shifter for alternately shifting either of two adjacent double-prop roof support units

Info

Publication number
PL280561A1
PL280561A1 PL28056189A PL28056189A PL280561A1 PL 280561 A1 PL280561 A1 PL 280561A1 PL 28056189 A PL28056189 A PL 28056189A PL 28056189 A PL28056189 A PL 28056189A PL 280561 A1 PL280561 A1 PL 280561A1
Authority
PL
Poland
Prior art keywords
shifter
roof support
support units
adjacent double
alternately shifting
Prior art date
Application number
PL28056189A
Other versions
PL159973B1 (en
Inventor
Stanislaw Losiak
Krzysztof Krauze
Jan Ptak
Janusz Blaschke
Original Assignee
Akad Gorniczo Hutnicza
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 Akad Gorniczo Hutnicza filed Critical Akad Gorniczo Hutnicza
Priority to PL28056189A priority Critical patent/PL159973B1/en
Publication of PL280561A1 publication Critical patent/PL280561A1/en
Publication of PL159973B1 publication Critical patent/PL159973B1/en

Links

PL28056189A 1989-07-11 1989-07-11 Shifter for alternately shifting either of two adjacent double-prop roof support units PL159973B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL28056189A PL159973B1 (en) 1989-07-11 1989-07-11 Shifter for alternately shifting either of two adjacent double-prop roof support units

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL28056189A PL159973B1 (en) 1989-07-11 1989-07-11 Shifter for alternately shifting either of two adjacent double-prop roof support units

Publications (2)

Publication Number Publication Date
PL280561A1 true PL280561A1 (en) 1991-01-14
PL159973B1 PL159973B1 (en) 1993-01-29

Family

ID=20047972

Family Applications (1)

Application Number Title Priority Date Filing Date
PL28056189A PL159973B1 (en) 1989-07-11 1989-07-11 Shifter for alternately shifting either of two adjacent double-prop roof support units

Country Status (1)

Country Link
PL (1) PL159973B1 (en)

Also Published As

Publication number Publication date
PL159973B1 (en) 1993-01-29

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