مشروع مادة الإنجليزي مستوى ثاني متوسط أحد المخترعين
Thomas Alva Edison
was widely known in America as one of America's
greatest inventors, even after his death in 1931.
He has a total of 1,093 patents registered in America
(1,084 utility patents and 9 designs patents).
In 2003 it was surpassed by the Japanese inventor,
Shōmei Yamazaki
