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