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Dies for forming a chain
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Patent number 4,641,701
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Issue date Feb 10, 1987
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Ken Yamamoto
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Method of manufacturing slide fasteners
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Patent number 4,110,890
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Issue date Sep 5, 1978
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Yoshida Kogyo K.K.
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Shunji Akashi
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Slide fastener stringer
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Patent number 4,037,295
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Issue date Jul 26, 1977
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Fred H. Rojahn
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3490100
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Patent number 3,490,100
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Issue date Jan 20, 1970
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3452805
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Patent number 3,452,805
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Issue date Jul 1, 1969
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B22 - CASTING POWDER METALLURGY
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3423792
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Patent number 3,423,792
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Issue date Jan 28, 1969
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3399258
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Patent number 3,399,258
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Issue date Aug 27, 1968
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3384949
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Patent number 3,384,949
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Issue date May 28, 1968
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A44 - HABERDASHERY JEWELLERY
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3358324
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Patent number 3,358,324
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Issue date Dec 19, 1967
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3354249
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Patent number 3,354,249
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Issue date Nov 21, 1967
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL