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The bifocals were invented in 1784, by Benjamin Franklin, because he had seeing problems, and put two lenses of glass together to magnify his vision.
What else can I help you with?
When were tifocals invented?
bifocals in 1884, but trifocals were in the 40's1 year ago
In what year were soft bifocal contact lenses invented?
Benjamin Franklin is generally credited with the invention of bifocals in 1784
Who invented bioforcal glasses?
Benjamin Franklin invented the bifocals
Did president George Washington invent bifocals?
George Constant Louis Washington, not the president of the United States, is fabled to have invented bifocals. However Benjamin Franklin invented bifocals on May 23, 1785.
Where and when were the bifocals invented?
ben Franklin invented his bifocals at his house in philly and made them on March 23.1784
Who invented the bifocals?
I've read that Benjamin Franklin invented them...
What state did ben invented the bifocals?
in Washington DC
What did Benjamin Franklin invent and what nationality was he?
he invented bifocals
Where were bifocals invented?
Bifocals were invented by Benjamin Franklin in the United States around 1784. Franklin designed them to help him see both up close and far away without having to switch between different pairs of glasses.
Why were bifocals invented?
Bifocals are used for distance seeing or at close up seeing.
Who invented the bifocals eyeglasses?
Benjamin Franklin.
What Chinese invention did Benjamin Franklin use?
Glasses ...He invented Bifocals .
