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An Entity of Type : prov:Entity, within Data Space : webisa.webdatacommons.org associated with source dataset(s)

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  • t. 1998Matsushita Electric Industrial Co., Ltd.Compound objective lens having two focal pointsUS58221351 mai 199613 oct. 1998Samsung Electronics Co., Ltd.Lens device including a light controlling mechanism and an optical pickup apparatus using a lens deviceUS590942418 sept. 19971 juin 1999Samsung Electronics Co., Ltd.Optical pickup device and method to read from and record information to disks of
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