发明名称 DIGITAL INFORMATION GUARD
摘要 A transparent protective cover for the play side of an optical disc is made of poly-carbon film. The protective cover is annular in shape and is appropriately sized to fit the various disc formats. There is provided an inner crevice or groove that fits the inner molding of a disc allowing for greater structural integrity and which assists in the placement of the protector on the disc. The device is attached to the disc using several clips that are located around the perimeter.
申请公布号 CA2231062(A1) 申请公布日期 1998.09.03
申请号 CA19982231062 申请日期 1998.03.03
申请人 PARK, ARNOLD L. 发明人 PARK, ARNOLD L.
分类号 G11B23/03;G11B33/14;(IPC1-7):G11B23/03 主分类号 G11B23/03
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