After you input a patent number of a country or an organization, it will timely output the number of the reel in which the original is located.

它以各国或组织的专利号作为提问输入，及时输出该项专利原文所在胶卷号。

youdao

After you input a patent number of a country or an organization, it will timely output the number of the reel in which the original is located.

它以各国或组织的专利号作为提问输入，及时输出该项专利原文所在胶卷号。

youdao