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Flexible conduit system
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Patent number 4,647,074
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Issue date Mar 3, 1987
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Indian Head, Inc.
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Harold T. Pate
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Flexible conduit system
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Patent number 4,524,999
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Issue date Jun 25, 1985
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Indian Head Inc.
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Harold T. Pate
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Flexible conduit system
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Patent number 4,470,622
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Issue date Sep 11, 1984
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Thyssen-Bornemisza Inc.
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Harold T. Pate
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Flexible conduit system
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Patent number 4,440,425
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Issue date Apr 3, 1984
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Indian Head Inc.
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Harold T. Pate
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Wall drainage system
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Patent number 4,309,855
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Issue date Jan 12, 1982
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Indian Head Inc.
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Harold T. Pate
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Flexible conduit system
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Patent number 4,248,459
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Issue date Feb 3, 1981
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Indian Head Inc.
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Harold T. Pate
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...