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Application filed by Inst Techniki BudowlanejfiledCriticalInst Techniki Budowlanej
Priority to PL23919782ApriorityCriticalpatent/PL136642B1/en
Publication of PL239197A1publicationCriticalpatent/PL239197A1/en
Publication of PL136642B1publicationCriticalpatent/PL136642B1/en