CPC Subgroup
G11B 5/852 Orientation in a magnetic field (G11B5/845 takes precedence)
Full Title
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (G11B11/00 take precedence) > Processes or apparatus specially adapted for manufacturing record carriers > Orientation in a magnetic field (G11B5/845 takes precedence)