CPC Main Group
G11B 23/00 Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus
12 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- G11B 23/02 Containers; Storing means
- G11B 23/14 providing ability to repeat location, e.g. using sprocket holes
- G11B 23/16 Record carriers with single-track for recording at spaced intervals along the track thereof, e.g. for speech or language training
- G11B 23/18 Record carriers with multiple tracks, e.g. with complementary and partial tracks such as paired "stereo" tracks
- G11B 23/20 with provision for splicing to provide permanent or temporary connections
- G11B 23/28 Indicating prior or unauthorised use,
- G11B 23/30 with provision for auxiliary signals
- G11B 23/38 Visual features other than those contained in record tracks or represented by sprocket holes
- G11B 23/50 Reconditioning of record carriers; Cleaning of record carriers (G11B3/58 takes precedence)