1. In what way is this invertion important to human beings?
2. In which year was it invented?
3a. Who is the inventor?
b.Can you briefly describe his/her work?
c.Write down anything else you have found out about him/her that you thick is worth writing down.
4. Any change or modification in the product after it is first invented?
5. Where (which website) do you get the information?
更新1:
ㄚ!這樣也給你看到!
更新2:
OK, the time is over. I can find the answer by myself now. Let me share with you. 1. It is a fastening device consisting of parallel rows of metal,plastic,or nylon teeth on adjacet edges of an opening that are interlocked bya sliding tab. 2.1913.
更新3:
3a. Gideon Sundback. b.He has invented zipper.1,060,378(US) patents issued April 29,1913. 1,219,881(US) patents issued November 20,1917. c.Gideon Sundback(1880-1956),is a American(Swedish-born).One ofhiscustomers was the US Army.It applied zippers to clothing and gear of the troops of World War 1.
更新4:
4.It is not only used over the boots.Zipper itself can used anywhere we like. 5.http://www.ideafinder.com/history/inventions/zipper.htm
