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Electric clutch brake apparatus
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Patent number 4,585,115
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Issue date Apr 29, 1986
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Sperry Corporation
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Curtis H. Lindblom
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Adjustable shearbar apparatus
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Patent number 4,436,248
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Issue date Mar 13, 1984
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Sperry Corporation
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Curtis H. Lindblom
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Adjustable coupling apparatus
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Patent number 4,280,317
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Issue date Jul 28, 1981
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Sperry Corporation
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Curtis H. Lindblom
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Multi-row crop header
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Patent number 4,083,167
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Issue date Apr 11, 1978
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Sperry Rand Corporation
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Curtis H. Lindblom
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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