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Magnetic storage medium
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Patent number 4,677,030
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Issue date Jun 30, 1987
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Agfa-Gevaert Aktiengesellschaft
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Johannes Gerum
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Magneto-optical storage process
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Patent number 4,497,007
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Issue date Jan 29, 1985
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Agfa-Gevaert Aktiengesellschaft
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Joachim Greiner
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Magnetic storage medium
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Patent number 4,477,531
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Issue date Oct 16, 1984
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AGFA-Gevaert A.G.
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Robert Kohler
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G11 - INFORMATION STORAGE
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Magnetic recording medium
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Patent number 4,404,253
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Issue date Sep 13, 1983
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Agfa-Gevaert Aktiengesellschaft
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Robert Kohler
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G11 - INFORMATION STORAGE
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Magnetic recording medium
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Patent number 4,323,621
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Issue date Apr 6, 1982
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Agfa-Gevaert Aktiengesellschaft
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Heinrich Kober
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G11 - INFORMATION STORAGE