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Button
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Patent number 8,850,666
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Issue date Oct 7, 2014
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YKK Corporation
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Kenji Hasegawa
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A44 - HABERDASHERY JEWELLERY
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Snap fastener construction
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Patent number 4,825,516
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Issue date May 2, 1989
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A-D Technology Ltd.
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Walter T. Ackermann
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Rotary snap machine
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Patent number 4,817,261
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Issue date Apr 4, 1989
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Ferris Manufacturing Company
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Robert W. Sessions
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Grommet forming fixture
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Patent number 4,765,177
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Issue date Aug 23, 1988
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PCI Group, Inc.
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Richard A. Pendleton
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A41 - WEARING APPAREL
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Method of making a fastener
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Patent number 4,735,753
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Issue date Apr 5, 1988
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Walter T. Ackermann
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Automatic riveting press
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Patent number 4,694,984
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Issue date Sep 22, 1987
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William Prym-Werke GmbH. & Co. KG
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Gerhard H. J. Altwicker
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A41 - WEARING APPAREL
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