197654 ⎘
Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor; Record carriers characterised by the selection of material or structure; Processes or apparatus specially adapted for manufacturing record carriers characterised by the selection of the material only
Sub-classes:Method of producing a data storage medium
#2Method for Imprinting and Erasing Amorphous Metal Alloys
#3Method for imprinting and erasing amorphous metal alloys
#4Method of producing a data storage medium