Boris B. Kalantarov

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Moscow, SU

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Patents Grantslast 30 patents

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Advancing system for coal winning machine
- Patent number 4,768,835
- Issue date Sep 6, 1988
- Gosudarstvenny Proektnokonstruktorsky I Experimentalny Institut Ugolnogo Mash...
- Boris B. Kalantarov
- E21 - EARTH DRILLING MINING