DIFF Subgroup
G11B 5/74 Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor > Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
CPC:
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (G11B11/00 take precedence) > Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
Of 5 combined children, 4 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
Navigate with arrow keys, Enter to open