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Tensile truss mast
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Patent number 9,908,750
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Issue date Mar 6, 2018
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Par Systems, Inc.
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Albert J. Sturm
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B66 - HOISTING LIFTING HAULING
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Crane device
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Patent number 4,158,414
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Issue date Jun 19, 1979
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Ray Wilson
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B66 - HOISTING LIFTING HAULING
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3887080
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Patent number 3,887,080
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Issue date Jun 3, 1975
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B66 - HOISTING LIFTING HAULING
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3550788
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Patent number 3,550,788
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Issue date Dec 29, 1970
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B66 - HOISTING LIFTING HAULING
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3467263
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Patent number 3,467,263
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Issue date Sep 16, 1969
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B66 - HOISTING LIFTING HAULING