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Electron beam lens
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Patent number 6,107,633
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Issue date Aug 22, 2000
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Advantest Corporation
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Jurgen Frosien
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H01 - BASIC ELECTRIC ELEMENTS
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Objective lens
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Patent number 6,104,034
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Issue date Aug 15, 2000
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Advantest Corporation
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Jurgen Frosien
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H01 - BASIC ELECTRIC ELEMENTS
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Optical unit
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Patent number 6,051,838
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Issue date Apr 18, 2000
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ACT Advanced Circuit Testing Gesellschaft fur Testsystementwicklung
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Jurgen Frosien
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H01 - BASIC ELECTRIC ELEMENTS
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Detector objective lens
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Patent number 5,895,917
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Issue date Apr 20, 1999
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ACT Advanced Circuit Testing Gesellschaft fur Testsystementwicklung mbH
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Koshi Ueda
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H01 - BASIC ELECTRIC ELEMENTS
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