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Stump trimmer
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Patent number 4,697,625
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Issue date Oct 6, 1987
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John D'Arcy Bolton
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Easy clear spray nozzle
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Patent number 4,682,731
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Issue date Jul 28, 1987
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John D. Bolton
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B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
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Safety ski harness
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Patent number 4,681,337
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Issue date Jul 21, 1987
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John D'Arcy Bolton
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A63 - SPORTS GAMES AMUSEMENTS
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Jet power lawn mower
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Patent number 4,499,710
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Issue date Feb 19, 1985
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John D. Bolton
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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Easy release mold
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Patent number 4,458,875
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Issue date Jul 10, 1984
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John D. Bolton
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL