G
PHYSICS
G
PHYSICS
G11
INFORMATION STORAGE
G11
INFORMATION STORAGE
G11B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G11B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5/00
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
5/00
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
G11B5/74
Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
G11B5/74
Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum