Boris J. Kochanowsky

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State College, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Open pit mine
- Patent number 4,103,972
- Issue date Aug 1, 1978
- Boris J. Kochanowsky
- E21 - EARTH DRILLING MINING
Information Patent Grant
Mining methods as such and combined with equipment
- Patent number 3,975,053
- Issue date Aug 17, 1976
- Boris J. Kochanowsky
- E21 - EARTH DRILLING MINING