1982
1982
The mobile phone was never born it was made by such companies as samsung,sony ericson,apple,blackberry etc. If you want the date of the first mobile phone then you would have to look on wikipedia.
december 1891
1973!
nov. 7 1997
The first phone invented was in 1765.
it was invented in April 3, 1973
The exact date that the trapezium was invented is currently unknown. However, it was invented by scientist and inventor Roger Cotes.
Mankind has been singing since we first evolved the ability to speak, so an exact date would be impossible to determine.
It was during WW2, but I don't have the exact date.
Well... tacos weren't discovered they were invented. They were made for the first time in Mexico in the 1400s the exact date is unknown.
There is no exact date associated with the invention of the wheeled cart. However, historians say it was invented in ancient China.