|
3522001
|
Data storage devices in general
|
|
3522010
|
Paper cards and tapes
|
|
3522020
|
Magnetic storage devices in general
|
|
3522021
|
Magnetic disks
|
|
3522022
|
Magnetic tapes
|
|
3522023
|
Cassettes and cartridges for magnetic tapes
|
|
3522030
|
Optical storage devices
|
|
3522099
|
Other data storage devices
|
