DIFF Subgroup
G11B 5/10 Structure or manufacture of housings or shields for heads
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 > Structure or manufacture of housings or shields for heads
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
Of 3 combined children, 2 exist in both systems.
1 codes are CPC-only extensions.
IPC defines codes here since 1974.
Child Classifications
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- G11B 5/11 Shielding of head against electric or magnetic fields since 1974 +1 CPC IPC+CPC Available in IPC and CPC