Patent classifications
G
PHYSICS
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G11
INFORMATION STORAGE
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G11B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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21/00
Head arrangements not specific to the method of recording or reproducing
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G11B21/003
Disposition of fixed heads, e.g. for scanning, selecting or following of tracks
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G11B21/006
for track following
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