Screwing action playable compact disc case

Sealable cover for a package and package system for...

Secure optical information disc

Secure optical information disc

Secure optical information disc

Secure optical information disc having a minimized metal layer

Self-adhesive spindle-shaped button disk and the use thereof

Self-contained, multi-axis recordable and storage apparatus

Semi-permanent enclosure for optical data storage device

Semi-permanent enclosure for optical data storage device

Shutter assembly for a disc cartridge

Shutter for disk cartridge and method for producing same

Shutter locking mechanism for a miniature compact disk cartridge

Shutter plate control device in a disc playback device

Shutterless data recording cartridge and drive for using same

Single disk write protection system for multiple-disk cartridge

Small disk adapter with storage case

Spacer for stacked recorded discs

Spacer for use in testing information recorded discs

Spacer/protector for stacking recorded 33 rpm records