Making a data-carrying optical disk

Manufacture of blanks for recording discs utilizing coextrusion

Manufacture of contoured records

Mechanical and fluid actuated ram for powder compacting press an

Method and apparatus for injection molding data carrying element

Method and apparatus for trimming and finishing the outer edge o

Method for defacing compact discs

Method for fabricating an information signal recorded medium of

Method for fabrication of disc substrate

Method for manufacturing disk-shaped information carriers

Method for molding a formatted substrate for an optical disk

Method for molding of substrate for information recording medium

Method for molding plastic material into disk shaped sabstrate f

Method for producing disc records having molded-in center holes

Method for producing injection molded and centrally apertured di

Method for producing injection molded and centrally apertured di

Method for the manufacture of capacitive electronic discs

Method for the manufacture of flexible disks

Method of making a laminated recorded disc

Method of making a video disc from a disc preform