Roger F. J. Adam

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Pittsburgh, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Cutterhead for water jet assisted cutting
- Patent number 4,836,613
- Issue date Jun 6, 1989
- Roger F. J. Adam
- E21 - EARTH DRILLING MINING
Information Patent Grant
Pre-bolting system for underground mines
- Patent number 4,653,810
- Issue date Mar 31, 1987
- Roger F. J. Adam
- E21 - EARTH DRILLING MINING