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铅笔是我们生活中十分常见的物品,常见到我们甚至很少会注意到它。其实,小小铅笔的背后有着不少故事,看完下面这篇文章之后,你或许会对它“另眼相看”。1858年3月30日,发明家
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铅笔是我们生活中十分常见的物品,常见到我们甚至很少会注意到它。其实,小小铅笔的背后有着不少故事,看完下面这篇文章之后,你或许会对它“另眼相看”。1858年3月30日,发明家海门·L·李普曼获得了第一支嵌有橡皮擦的铅笔的专利权,然后以十万美元的价格卖掉了这项专利。信不信由你,一根小小石墨棒让人发财或是破产,这在历史上可不是头一回了。以下便是关于铅笔这一世界上最受喜爱的书写工具的
Pencil is a very common object in our life, we rarely see it until we see it. In fact, behind the little pencil has a lot of stories, after reading this article, you may be “it”. On March 30, 1858, inventor Haven L. Lipman received the patent for the first pencil with an eraser and sold the patent for 100,000 U.S. dollars. Believe it or not, a small graphite stick makes a fortune or bankruptcy, which is not the first time in history. Here’s the pencil’s favorite writing instrument in the world
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