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What year was the bifocals invented?
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 was everything Benjamin Franklin invented?
He invented the lightning rod, bifocals, the Franklin stove, a carriage odometer, and the glass 'armonica'.
Where were bifocals invented?
bifocals were invented on the 300th block of Market street in Philadelphia
Where and when were the bifocals invented?
ben Franklin invented his bifocals at his house in philly and made them on March 23.1784
What did Benjamin Franklin have or ivent?
Ben Franklin invented the Lighting Rod,Bifocals,Frankiln Stove,Carriage Odometer and the Glass Armonica.
What was Benjamin Franklin's invention?
He invented the lightning rod, bifocals, the Franklin stove, a carriage odometer, and the glass 'armonica'.
What did Ben Franklin invent?
Ben Franklin invented a lot of things. one thing that he invented was the glass harmonica. he also invented the lightning rod and bifocal glasses.Also the fire dep.i do not know a$$he taught himself to swim from a book but wanted to be faster so he developed the swim fin. there is the franklin stove there was also a musical instrument with spinning glass to vibrate with your damp fingers think of a glass rim. of course dont forget the lightning rod and bi focals and the idea of ocean currents.
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.
What did Benjamin kranklin invent?
Benjamin Franklin was president from 1785 to 1788. Benjamin Franklin invented the lightning rod, bifocals, the Franklin stove, a catheter, and a glass harmonica.
Who invented the bifocals?
I've read that Benjamin Franklin invented them...
What state did ben invented the bifocals?
in Washington DC
