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Composite utility pole
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Patent number 5,704,187
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Issue date Jan 6, 1998
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Shakespeare Company
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Gregory Sander Hosford
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Method for making composite utility pole
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Patent number 5,492,579
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Issue date Feb 20, 1996
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Shakespeare Company
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Gregory S. Hosford
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Breakaway utility pole
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Patent number 5,060,437
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Issue date Oct 29, 1991
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Shakespeare Company
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James H. Parsons
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Breakaway utility pole
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Patent number 4,920,715
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Issue date May 1, 1990
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Shakespeare Company
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James H. Parsons
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES