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International trade
containing
分类的
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in specified order only
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1971 年
关于国际专利
分类的
斯特拉斯堡协定
Strasbourg Agreement Concerning the International Patent Classification
(1971)
按商业类别分组的销售额
sales by kind of business
按类编列的分类页目录
catalogue raisonne
附有解答的分类目录
catalogue raisonne
项目的分类
segregation of items
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