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Application filed by Zbigniew Fraczek, Andrzej SlocinskifiledCriticalZbigniew Fraczek
Priority to PL31450996ApriorityCriticalpatent/PL314509A1/en
Publication of PL314509A1publicationCriticalpatent/PL314509A1/en
PL31450996A1996-05-291996-05-29Method of displacing the conveyors along with progress of mechanised longwall mining work and apparatus therefor
PL314509A1
(en)