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Apparatus for testing matrixes
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Patent number 5,579,113
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Issue date Nov 26, 1996
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Koch Digitaldisc Gesellschaft m.b.h. & Co. KG.
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Gerhard Papst
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G11 - INFORMATION STORAGE
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Process for producing a cutting base
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Patent number 4,640,745
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Issue date Feb 3, 1987
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TELDEC Schallplatten GmbH
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Herbert Knothe
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C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
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Method for producing a record carrier
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Patent number 4,512,007
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Issue date Apr 16, 1985
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Teldec Telefunken-Decca Schallplatten GmbH
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Herbert Knothe
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C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
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3104881
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Patent number 3,104,881
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Issue date Sep 24, 1963
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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1327722
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Patent number 1,327,722
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Issue date Jan 13, 1920
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G11 - INFORMATION STORAGE