Description
A basic concordance table between the subclasses of the IPC (International Patent Classification) and the DPK (Deutsche Patentklassifikation, the German Patent Classification). The list is mainly based on statistics made by the German Patent and Trademark Office in 1972-1973.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| Distribution for concordance list between IPC and the German class system (DPK) | Unknown | Open resource |