Recording on, or reproducing or erasing from, magnetic disks (G11B17/00, G11B19/00 take precedence)

Introduced: July 1974

Title

Titles differ between systems:

IPC: Recording on, or reproducing or erasing from, magnetic disks

CPC: Recording on, or reproducing or erasing from, magnetic disks (G11B17/00, G11B19/00 take precedence)

Full Title

Full titles differ between systems:

IPC:

Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor > Recording on, or reproducing or erasing from, magnetic disks

CPC:

Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (G11B11/00 take precedence) > Recording on, or reproducing or erasing from, magnetic disks (G11B17/00, G11B19/00 take precedence)

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

IPC defines codes here since 1974.

Child Classifications

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G11B 5/016 using magnetic foils since 1974 IPC+CPC Available in IPC and CPC