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Display device
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Patent number 5,684,504
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Issue date Nov 4, 1997
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U.S. Philips Corporation
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Antonius G. H. Verhulst
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Display device
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Patent number 5,627,560
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Issue date May 6, 1997
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U.S. Philips Corporation
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Antonius G. H. Verhulst
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Display device
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Patent number 5,467,105
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Issue date Nov 14, 1995
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U.S. Philips Corporation
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Antonius G. H. Verhulst
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Electroscopic display device
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Patent number 4,965,562
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Issue date Oct 23, 1990
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U.S. Philips Corporation
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Antonius G. H. Verhulst
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Electroscopic fluid display
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Patent number 4,923,283
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Issue date May 8, 1990
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U.S. Philips Corporation
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Antonius G. H. Verhulst
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Passive display device
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Patent number 4,807,967
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Issue date Feb 28, 1989
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U.S. Philips Corporation
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Hendrik Veenvliet
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Magnetic domain device
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Patent number 4,471,467
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Issue date Sep 11, 1984
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U.S. Philips Corporation
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Frederik A. de Jonge
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G11 - INFORMATION STORAGE
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Magnetic domain device
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Patent number 4,157,591
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Issue date Jun 5, 1979
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U.S. Philips Corporation
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Evert H. L. J. Dekker
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G11 - INFORMATION STORAGE
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