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Anchoring systems for mines
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Patent number 10,132,165
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Issue date Nov 20, 2018
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Terrasimco, Inc.
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Walter John Simmons
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Coated mining bolt
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Patent number 8,685,303
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Issue date Apr 1, 2014
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Terrasimco Inc.
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Walter John Simmons
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Coated mining bolt
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Patent number 7,736,738
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Issue date Jun 15, 2010
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Terrasimco Inc.
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Walter John Simmons
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Toughened polyethylene terephthalate
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Patent number 7,351,756
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Issue date Apr 1, 2008
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Terrasimco Inc.
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Walter John Simmons
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Frictional mining bolt
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Patent number 6,935,811
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Issue date Aug 30, 2005
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Terrasimco Inc.
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Walter Neal Simmons
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E21 - EARTH DRILLING MINING
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