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Herodotus machine
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Patent number 9,879,394
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Issue date Jan 30, 2018
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Keith Lorin Jenkins
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2608827
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Patent number 2,608,827
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Issue date Sep 2, 1952
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2103871
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Patent number 2,103,871
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Issue date Dec 28, 1937
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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1886591
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Patent number 1,886,591
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Issue date Nov 8, 1932
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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1795398
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Patent number 1,795,398
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Issue date Mar 10, 1931
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING