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Objective lens unit, its manufacturing method and optical pick-up apparatus App 20070047424 - Wada; Kazuhiro ;   et al. | 2007-03-01 |
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Object lens unit and optical pickup device employing the unit App 20060056074 - Yamamoto; Shogo ;   et al. | 2006-03-16 |
Objective lens for use in optical pickup apparatus and optical pickup apparatus Grant 6,919,996 - Wada , et al. July 19, 2 | 2005-07-19 |
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Estimation evaluation system App 20040078344 - Iwai, Kazuhiro ;   et al. | 2004-04-22 |
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Objective lens for use in optical pickup apparatus and optical pickup apparatus App 20040032671 - Wada, Kazuhiro ;   et al. | 2004-02-19 |
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Electromagnetic clutch structure in driving force distribution system App 20020130008 - Tomari, Tatsuhiro ;   et al. | 2002-09-19 |
Electromagnetic clutch structure in driving force distribution system App 20020100654 - Tomari, Tatsuhiro ;   et al. | 2002-08-01 |
Objective lens for use in optical pickup apparatus and optical pickup apparatus App 20020097508 - Wada, Kazuhiro ;   et al. | 2002-07-25 |
Driving force distribution device for vehicle App 20010035324 - Okuma, Shinji ;   et al. | 2001-11-01 |
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Porous aluminum oxide film and method of forming of the same Grant 5,087,330 - Wada , et al. February 11, 1 | 1992-02-11 |