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PCE
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DIFF Subgroup
G11B 13/06

optically and by styli

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Recording simultaneously or selectively by methods or means covered by different main groups; Record carriers therefor; Reproducing simultaneously or selectively therefrom > optically and by styli

CPC:

Recording simultaneously or selectively by methods covered by different main groups ; Record carriers therefor ; Reproducing therefrom > optically and by styli

No child classifications to compare. This is a leaf node in both IPC and CPC.