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Low cost punch mechanism
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Patent number 5,005,458
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Issue date Apr 9, 1991
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Merrick Industries, Incorporated
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Robert G. Merrick
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B26 - HAND CUTTING TOOLS CUTTING SEVERING
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Card file mounting member
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Patent number 4,917,523
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Issue date Apr 17, 1990
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Merrick Industries, Inc.
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Robert G. Merrick
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B26 - HAND CUTTING TOOLS CUTTING SEVERING
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Card file punch
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Patent number 4,869,143
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Issue date Sep 26, 1989
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Merrick Industries, Inc.
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Robert G. Merrick
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B26 - HAND CUTTING TOOLS CUTTING SEVERING