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One-piece coupling
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Patent number D916033
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Issue date Apr 13, 2021
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Robroy Industries—Texas, LLC
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Steven A. Voelzke
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D13 - Equipment for production, distribution, or transformation of energy
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Hub
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Patent number D913954
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Issue date Mar 23, 2021
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Robroy Industries—Texas, LLC
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Steven A. Voelzke
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D13 - Equipment for production, distribution, or transformation of energy
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Conduit fitting
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Patent number D913960
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Issue date Mar 23, 2021
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ROBROY INDUSTRIES
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Steven A. Voelzke
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D13 - Equipment for production, distribution, or transformation of energy
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Reducing bushing
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Patent number D913248
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Issue date Mar 16, 2021
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Robroy Industries—Texas, LLC
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Steven A. Voelzke
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D13 - Equipment for production, distribution, or transformation of energy