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Process for making transfer elements
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Patent number 4,327,127
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Issue date Apr 27, 1982
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Columbia Ribbon & Carbon Mfg. Co., Inc.
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George P. Dapp
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Process for producing transfer ribbons
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Patent number 4,321,286
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Issue date Mar 23, 1982
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International Business Machines Corporation
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Michael A. Scott
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Transfer elements and process
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Patent number 4,260,664
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Issue date Apr 7, 1981
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Columbia Ribbon & Carbon Mfg. Co., Inc.
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George P. Dapp
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Transfer elements
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Patent number 4,238,549
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Issue date Dec 9, 1980
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Columbia Ribbon & Carbon Mfg. Co., Inc.
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George P. Dapp
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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