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Magnetic shielding CRT
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Issue date Sep 8, 1998
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Samsung Display Devices Co., Ltd.
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Dong Min Park
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3663907
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Issue date May 16, 1972
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H01 - BASIC ELECTRIC ELEMENTS
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3340443
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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2763804
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H01 - BASIC ELECTRIC ELEMENTS
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2677779
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H04 - ELECTRIC COMMUNICATION TECHNIQUE