Top IPC subclasses
1
|
H04L
|
6
|
transmission of digital information, e.g. telegraphic communication
|
2
|
G06F
|
4
|
electric digital data processing
|
3
|
G11B
|
2
|
information storage based on relative movement between record carrier and transducer
|
4
|
G06K
|
1
|
Recognition of data; presentation of data; record carriers; handling record carriers
|