单词：patent invention
patent invention的用法和样例：
例句
- One can get all the details of a patented invention from a library attached to the patent office.我们可以从附属于专利局的图书馆获取某项专利发明的所有详细资料。
- This was not a patentable invention, since Volta and others long ago created the principles of batteries.这不是一个专利发明，因为沃尔特和其他很久以前创建的原则，电池。
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