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Application filed by Kopalnia Wegla Kamiennego MakofiledCriticalKopalnia Wegla Kamiennego Mako
Priority to PL19687277ApriorityCriticalpatent/PL196872A1/pl
Publication of PL196872A1publicationCriticalpatent/PL196872A1/pl
PL19687277A1977-03-221977-03-22Sposob zabezpieczenia stropu obudowa kotwiowa w scianie przy przejsciu z obudowy indywidualnej na obudowe zmechanizowana
PL196872A1
(pl)