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Gwarectwo Mechanizacji Gornictwa "POLMAG"
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Gliwice, PL
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Patent Grant
Generator for dynamic loading of a mine lining
Patent number
4,718,793
Issue date
Jan 12, 1988
Gwarectwo Mechanizacji Gornictwa "POLMAG"
Waclaw Warachim
E21 - EARTH DRILLING MINING
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