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Collapsible steering column
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Patent number 4,531,619
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Issue date Jul 30, 1985
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Robert E. Eckels
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Hydraulic weeder
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Patent number 4,466,490
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Issue date Aug 21, 1984
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Robert E. Eckels
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Multiple head rubber stamp
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Patent number 4,452,142
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Issue date Jun 5, 1984
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Robert E. Eckels
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Linear explosive
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Patent number 4,034,672
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Issue date Jul 12, 1977
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Robert E. Eckels
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F42 - AMMUNITION BLASTING
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Solar heat collector
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Patent number 4,033,324
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Issue date Jul 5, 1977
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Robert E. Eckels
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F24 - HEATING RANGES VENTILATING
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