IPC Subgroup
G11B 5/76 Drum carriers
Introduced: September 1968
Last revised: January 2006
Full Title
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor > Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum > Drum carriers
Classification Context
- Section:
- PHYSICS
- Class:
- INFORMATION STORAGE
- Subclass:
- INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER