Understanding the Classification and Identification of Goods and Services at USPTO
| 文件编号 | WIPO/WEBINAR/MADRID/2021/11/WWW/534618 |
| 相关会议 | WIPO/WEBINAR/MADRID/2021/11 |
| 发布日期 | 2021年4月1日 |
| English | Understanding the Classification and Identification of Goods and Services at USPTO |