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Gary A. Hakes
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Hopewell, NJ, US
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last 30 patents
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Patent Grant
Mining apparatus and method
Patent number
4,328,994
Issue date
May 11, 1982
Lee-Norse Company
Gary A. Hakes
E21 - EARTH DRILLING MINING
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Patent Grant
Mining and bolting method and apparatus
Patent number
4,310,197
Issue date
Jan 12, 1982
Lee-Norse Company
William E. McCracken
E21 - EARTH DRILLING MINING
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Patent Grant
Roof bolting apparatus
Patent number
4,172,615
Issue date
Oct 30, 1979
Lee-Norse Company
Gary A. Hakes
E21 - EARTH DRILLING MINING