In 1878, Edison received a patent for his phonograph. 1878年,爱迪生的留声机获得了专利。
a patent application 一项专利申请
a patent printing process 专利印刷程序
present tense | |
I/you/we/they | patent |
he/she/it | patents |
present participle | patenting |
past tense | patented |
past participle | patented |
When was the first computer mouse patented? 第一个计算机鼠标是什么时候获得专利的?
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