Basic Concept and Structure of the International Patent Classification (IPC), and Scope of Classification Places
| رمز الوثيقة | WIPO/IP/HRE/03/4 |
| الاجتماعات ذات الصلة | WIPO/IP/HRE/03 |
| تاريخ النشر | 1 أبريل 2003 |
| English | Basic Concept and Structure of the International Patent Classification (IPC), and Scope of Classification Places |