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Flow soldering process and apparatus
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Patent number 6,805,282
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Issue date Oct 19, 2004
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Matsushita Electric Industrial Co., Ltd.
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Yasuji Kawashima
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Valve nozzle for injection molding
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Patent number 4,681,528
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Issue date Jul 21, 1987
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Matsushita Electric Industrial Co., Ltd.
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Yoshio Maruyama
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Laminated core producing apparatus
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Patent number 4,524,507
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Issue date Jun 25, 1985
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Matsushita Electric Industrial Co., Ltd.
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Yoshihumi Hara
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...