Today, there are at least three basic types of patents available: utility , design, and plant patents.

今天，至少有三个基本类型的专利有：公用事业，设计和植物专利。

youdao

Today, there are at least three basic types of patents available: utility , design, and plant patents.

今天，至少有三个基本类型的专利有：公用事业，设计和植物专利。

youdao