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Route to hybrid rice production
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Patent number 4,999,945
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Issue date Mar 19, 1991
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Ring Around Products, Inc.
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Alfonso G. Calub
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Hybrid rice
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Patent number 4,827,664
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Issue date May 9, 1989
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China National Seed Corporation
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Long-Ping Yuan
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Route to hybrid rice production
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Patent number 4,764,643
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Issue date Aug 16, 1988
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Ring Around Products, Inc.
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Alfonso G. Calub
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Levee gate cutter
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Patent number 4,506,741
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Issue date Mar 26, 1985
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Melvin F. Hula
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Hybrid rice
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Patent number 4,305,225
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Issue date Dec 15, 1981
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China National Seed Corporation
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Long-Ping Yuan
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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3134233
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Patent number 3,134,233
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Issue date May 26, 1964
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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1770867
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Patent number 1,770,867
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Issue date Jul 15, 1930
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING