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Underground auger system
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Patent number 6,416,134
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Issue date Jul 9, 2002
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Brydet Development Corp.
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Douglas J. Share
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E21 - EARTH DRILLING MINING
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Quadrapod auger support
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Patent number 5,685,382
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Issue date Nov 11, 1997
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Brydet Development Corp.
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Ronald C. Deeter
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Auger apparatus
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Patent number 4,732,224
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Issue date Mar 22, 1988
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The Salem Tool Company
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Ronald C. Deeter
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E21 - EARTH DRILLING MINING
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Auger mining machine
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Patent number 4,264,106
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Issue date Apr 28, 1981
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The Salem Tool Company
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Ronald C. Deeter
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E21 - EARTH DRILLING MINING
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