DIFF Subgroup
G11B 3/60 Turntables for record carriers
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor > Turntables for record carriers
CPC:
Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor (G11B11/00, take precedence) > Turntables for record carriers
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1985.
Child Classifications
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- G11B 3/61 Damping of vibrations of record carriers on turntables since 1985 IPC+CPC Available in IPC and CPC