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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5/00
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
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G11B5/62
Record carriers characterised by the selection of the material
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G11B5/64
comprising only the magnetic material without bonding agent
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G11B5/65
characterised by its composition
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G11B5/658
containing oxygen, e.g. molecular oxygen or magnetic oxide
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