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Application filed by Posteor Przed Wdrazania I Upow, Miejskie Przed Gospodarki CiepfiledCriticalPosteor Przed Wdrazania I Upow
Priority to PL28336990ApriorityCriticalpatent/PL161113B1/en
Publication of PL283369A1publicationCriticalpatent/PL283369A1/en
Publication of PL161113B1publicationCriticalpatent/PL161113B1/en
PL28336990A1990-01-191990-01-19Central heating heat exchanger unit for heating circulatory water at heat exchange centres of district heating systems
PL161113B1
(en)