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Safety sinker
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Patent number 4,926,580
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Issue date May 22, 1990
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Chen-Ju Lin
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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3121968
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Patent number 3,121,968
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Issue date Feb 25, 1964
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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3076283
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Patent number 3,076,283
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Issue date Feb 5, 1963
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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2910796
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Patent number 2,910,796
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Issue date Nov 3, 1959
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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2744350
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Patent number 2,744,350
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Issue date May 8, 1956
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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2557240
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Patent number 2,557,240
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Issue date Jun 19, 1951
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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1913425
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Patent number 1,913,425
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Issue date Jun 13, 1933
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING