Shielding of head against electric or magnetic fields

Introduced: July 1974

Full Title

Full titles differ between systems:

IPC:

Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor > Structure or manufacture of housings or shields for heads > Shielding of head against electric or magnetic fields

CPC:

Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (G11B11/00 take precedence) > Structure or manufacture of housings or shields for heads > Shielding of head against electric or magnetic fields

Of 2 combined children, 1 exist in both systems.

1 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1974.

Child Classifications

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G11B 5/112 CPC only CPC only
G11B 5/115 Shielding devices arranged between heads or windings ( , G11B5/29 take precedence) since 1974 IPC+CPC Available in IPC and CPC