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He made $2,456,876,251
He made many mistakes along the way. He was human.
As of this writing, no, Martin Cooper is not dead. He is in his late 80s.
He made many mistakes along the way. He was human.
Martin Luther King junior was human. Like all humans he made mistakes.
From his name, he may make barrels.
Martin Cooper's first official call was to Joel S. Engel (head of research at Bell Labs) on April 3, 1973.
Martin Cooper was the inventor of the mobile phone. He worked for Motorola. He made the first cell call in 1972.http://www.encyclopedia.com/people/literature-and-arts/music-history-composers-and-performers-biographies/martin-cooper
That is considered to be Martin Cooper (was a general manager in the systems division of Motorola). He was also the first person to make a call on a portable cell phone in April 1973.
Martin Cooper was born December 26, 1928 The cell phone was invented in 1973 That would make him about 44 or 45, depending on what day it was invented....
Martin Cooper Made The First Phone (Motorola) In 1973...
If they are not good at it because they don't understand it then practice will make limited difference. But if (or when) they do understand it, practice should help reduce silly mistakes.