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Method for assembling a heat exchanger core
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Patent number 5,966,808
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Issue date Oct 19, 1999
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Progressive Tool & Industries Company
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William J. Maybee
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Method of producing corrugated fins
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Patent number 5,758,535
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Issue date Jun 2, 1998
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Ford Motor Company
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Ronald Lewis Pardi
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Tension control of a fin forming device
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Patent number 5,640,870
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Issue date Jun 24, 1997
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Ford Motor Company
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Alfred John Michelini
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Fin mill machine
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Patent number 5,628,221
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Issue date May 13, 1997
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Ford Motor Company
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Ronald L. Pardi
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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