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Priority to PL20196777ApriorityCriticalpatent/PL108765B2/en
Publication of PL201967A1publicationCriticalpatent/PL201967A1/en
Publication of PL108765B2publicationCriticalpatent/PL108765B2/en
PL20196777A1977-11-071977-11-07Pneumatic apparatus for continuous emptying multi-pointloose material sources and conveying it to single place
PL108765B2
(en)