Supporting the heads; Supporting the sockets for plug-in heads

Introduced: September 1968

Full Title

Head arrangements not specific to the method of recording or reproducing > Supporting the heads; Supporting the sockets for plug-in heads

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

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G11B 21/18 while the head is moving IPC+CPC Available in IPC and CPC
G11B 21/20 while the head is in operative position but stationary or permitting minor movements to follow irregularities in surface of record carrier IPC+CPC Available in IPC and CPC
G11B 21/22 while the head is out of operative position IPC+CPC Available in IPC and CPC
G11B 21/24 Head support adjustments IPC+CPC Available in IPC and CPC
G11B 21/26 Means for interchange or replacement of head or head element IPC+CPC Available in IPC and CPC