PL 23470 2 Urzadzenie do badania zjawiska generowania cisnienia przez próbki wegla Ilustracja wzoru PL 23470 3 PL 23470 4 Departament Wydawnictw UPRP PL PL PL PLPL 23470 2 Device for testing the phenomenon of pressure generation by coal samples. Illustration of the model PL 23470 3 PL 23470 4 Publishing Department of the Polish Patent Office PL PL PL PL
PL25096F2016-12-20
Device for testing the phenomenon of pressure generation by carbon samples
PL23470S2
(en)