PL284303A1 - Lemniscate-type self-advancing roof supports - Google Patents

Lemniscate-type self-advancing roof supports

Info

Publication number
PL284303A1
PL284303A1 PL28430390A PL28430390A PL284303A1 PL 284303 A1 PL284303 A1 PL 284303A1 PL 28430390 A PL28430390 A PL 28430390A PL 28430390 A PL28430390 A PL 28430390A PL 284303 A1 PL284303 A1 PL 284303A1
Authority
PL
Poland
Prior art keywords
lemniscate
type self
roof supports
advancing roof
advancing
Prior art date
Application number
PL28430390A
Other versions
PL161805B1 (en
Inventor
Stanislaw Belczyk
Karol Biernacki
Piotr Konieczny
Original Assignee
Glinik Fabryka Maszyn Wiertnic
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 Glinik Fabryka Maszyn Wiertnic filed Critical Glinik Fabryka Maszyn Wiertnic
Priority to PL28430390A priority Critical patent/PL161805B1/en
Publication of PL284303A1 publication Critical patent/PL284303A1/en
Publication of PL161805B1 publication Critical patent/PL161805B1/en

Links

PL28430390A 1990-03-13 1990-03-13 Lemniscate-type self-advancing roof supports PL161805B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL28430390A PL161805B1 (en) 1990-03-13 1990-03-13 Lemniscate-type self-advancing roof supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL28430390A PL161805B1 (en) 1990-03-13 1990-03-13 Lemniscate-type self-advancing roof supports

Publications (2)

Publication Number Publication Date
PL284303A1 true PL284303A1 (en) 1991-09-23
PL161805B1 PL161805B1 (en) 1993-07-30

Family

ID=20050611

Family Applications (1)

Application Number Title Priority Date Filing Date
PL28430390A PL161805B1 (en) 1990-03-13 1990-03-13 Lemniscate-type self-advancing roof supports

Country Status (1)

Country Link
PL (1) PL161805B1 (en)

Also Published As

Publication number Publication date
PL161805B1 (en) 1993-07-30

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