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Pushbutton type bottle cap
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Patent number 4,487,342
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Issue date Dec 11, 1984
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Min C. Shy
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Insulated bucket with air pump
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Patent number 4,320,859
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Issue date Mar 23, 1982
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Min C. Shy
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B67 - OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS LIQUID...
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Easily foldaway stand
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Patent number 4,297,953
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Issue date Nov 3, 1981
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Min C. Shy
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F24 - HEATING RANGES VENTILATING