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Interchangeable insert
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Patent number 10,683,886
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Issue date Jun 16, 2020
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OLDCASTLE INFRASTRUCTURE, INC.
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F. Matthew Schweinberg
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Self centering enclosure
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Patent number 10,256,616
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Issue date Apr 9, 2019
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MACLEAN POWER, L.L.C.
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F. Matthew Schweinberg
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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End caps for drainage system
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Patent number 6,027,283
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Issue date Feb 22, 2000
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Strongwell Corporation
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F. Matthew Schweinberg
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES