根据下面的提示，用英语写一篇短文，标题已给出。词数：80左右。

How Was the Ballpoint Pen Invented?

Who: John Loud, an American tanner

When: in 1888

Advantages: help write faster, make life easier

Disadvantages: need refilling

Where to be used: many fields

Price: low

Changes: become smaller and lighter