G11B3/70 - CPC Classification Index

ClassID:

197652 ⎘

G11B3/70 - CPC Classification

Classification description:

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

Sub-classes:

G11B3/702 » {for video discs with grooves } 1
G11B3/705 » {characterised by the selection of the material only} 4

Recent Application in this class:

20250182788

A PROCESS FOR THE PREPARATION OF A PHONOGRAPH DISC

20190065662

Method for producing a high definition analogue audio storage medium

20180240474

Methods and coatings for advanced audio recording and playback

20160322070

Gramophone record

20160322069

Gramophone record

20130200041

Method for Manufacturing Glass Stamper and Method for Manufacturing Magnetic Recording Medium

20100237040

Method for manufacturing glass stamper, glass stamper, and method for manufacturing magnetic recording medium

20050002319

Metrological digital audio reconstruction