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Class Information
Number: 369/281
Name: Dynamic information storage or retrieval > Storage medium structure > Specific disc profile > With interdisc coupling
Description: Subject matter wherein the disc includes an element which couples with a similar element of another disc placed thereon so as to prevent slippage between the two discs.

Patents under this class:

Patent Number Title Of Patent Date Issued
7194751 Optical information medium Mar. 20, 2007
7027385 Optical disk, disk substrate, and drive Apr. 11, 2006
6795389 Optical information recording medium with substrate and multiple information Sep. 21, 2004
6636475 Compact disk storage device Oct. 21, 2003
6445676 Optical information medium Sep. 3, 2002
6404730 Optical disk having a groove and a projection for combining two disk members Jun. 11, 2002
6368691 Substrates disk for digital video Apr. 9, 2002
6307830 Protected recording medium Oct. 23, 2001
6160787 Multiple layer optical recording medium for use with two different wavelength laser beams Dec. 12, 2000
6031813 Optical recording medium having dual information surfaces Feb. 29, 2000
6021279 Colorimetric device for use in a camera Feb. 1, 2000
6018512 System and method of encoding for identifying a given surface among several identically patterned disk surfaces Jan. 25, 2000
5966367 Optical information recording medium Oct. 12, 1999
5875171 Interlocking disk stack that prevents disk slip in a storage disk Feb. 23, 1999
5726969 Optical recording medium having dual information surfaces Mar. 10, 1998
5608715 Multi-layered recording disk and recording/reproducing system using the same Mar. 4, 1997
5579296 Optically readable thin film digital data storage medium Nov. 26, 1996
5378517 Optical disc having signal recording layer on each side and method for producing same Jan. 3, 1995
4917751 Method of producing double sided optical memory disks Apr. 17, 1990
4101135 Sound reproducing unit Jul. 18, 1978

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