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Methods for creating footings
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Patent number 7,874,122
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Issue date Jan 25, 2011
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Strata Systems, Incorporated
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Jonathan S. Calle
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Device for creating a footing
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Patent number 7,562,502
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Issue date Jul 21, 2009
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Strata Systems, Incorporated
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Jonathan S. Calle
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Device for creating a footing
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Patent number 7,549,259
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Issue date Jun 23, 2009
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Strata Systems, Incorporated
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Jonathan S. Calle
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING