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Mine roof support assembly
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Patent number 5,100,263
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Issue date Mar 31, 1992
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Meco Mining Equipment Limited
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Brian J. Woodford
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E21 - EARTH DRILLING MINING
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Mine roof support
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Patent number 5,073,067
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Issue date Dec 17, 1991
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Meco Mining Equipment Limited
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Peter Elliott-Moore
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E21 - EARTH DRILLING MINING
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Mine roof support
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Patent number 5,033,913
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Issue date Jul 23, 1991
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Meco Mining Equipment Limited
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Brian J. Woodford
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E21 - EARTH DRILLING MINING
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Mine roof support assembly
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Patent number 4,940,363
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Issue date Jul 10, 1990
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Meco Mining Equipment Limited
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Stephen A. Brown
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E21 - EARTH DRILLING MINING