单词：take out a patent for
take out a patent for的用法和样例：
例句
- Tom obtained a patent for the process.汤姆获得了这项工艺的专利。
- SunTour's slant parallelogram patent had expired.山图的倾斜平行四边形的专利已经过期。
单词：take out a patent for 相关文章
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