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Control device
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Patent number 4,553,446
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Issue date Nov 19, 1985
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Kubota, Ltd.
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Yoshitaka Matsubara
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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2504285
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Patent number 2,504,285
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Issue date Apr 18, 1950
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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2498889
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Patent number 2,498,889
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Issue date Feb 28, 1950
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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2301816
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Patent number 2,301,816
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Issue date Nov 10, 1942
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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2299889
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Patent number 2,299,889
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Issue date Oct 27, 1942
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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2292325
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Patent number 2,292,325
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Issue date Aug 4, 1942
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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2265378
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Patent number 2,265,378
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Issue date Dec 9, 1941
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G05 - CONTROLLING REGULATING
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2223406
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Patent number 2,223,406
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Issue date Dec 3, 1940
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...