TREA

Institut Gornogo Dela Akademii Nauk Kazakhskoi SSR

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  • Information Patent Grant

    Pneumatic rock drill
    • Patent number 4,182,421
    • Issue date Jan 8, 1980
    • Institut Gornogo Dela Akademii Nauk Kazakhskoi SSR
    • Anatoly I. Zubarev
    • E21 - EARTH DRILLING MINING

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