Two-Level Structure of the Reformed International Patent Classification (IPC)
| Document Code | IPC/CE/29/4 SUPPL.1 |
| Related Meeting(s) | IPC/CE/29 |
| Publication Date | March 10, 2000 |
| English | Two-Level Structure of the Reformed International Patent Classification (IPC) |
| Français | Structure à deux niveaux de la Classification internationale des brevets après sa réforme |