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Method of producing wing nuts
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Patent number 5,060,331
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Issue date Oct 29, 1991
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Luchu Shinyee Works Co., Ltd.
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Tsai-Fu Shie
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2812527
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Patent number 2,812,527
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Issue date Nov 12, 1957
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2714450
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Patent number 2,714,450
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Issue date Aug 2, 1955
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2614274
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Patent number 2,614,274
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Issue date Oct 21, 1952
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2099232
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Patent number 2,099,232
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Issue date Nov 16, 1937
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2068076
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Patent number 2,068,076
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Issue date Jan 19, 1937
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2068075
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Patent number 2,068,075
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Issue date Jan 19, 1937
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1981363
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Patent number 1,981,363
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Issue date Nov 20, 1934
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1399793
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Patent number 1,399,793
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Issue date Dec 13, 1921
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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1395762
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Patent number 1,395,762
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Issue date Nov 1, 1921
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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948616
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Patent number 948,616
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Issue date Feb 8, 1910
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...