Ben Franklin was a very famous inventor through the 1700-1730's. He created bifocal glasses and fireplaces. He also made many more inventions. His inventions were most popular in the Middle Colonies, Pennsylvania. Bifocal glasses cost about 20 pounds and fireplaces were about 30-32. These were invented in about 1730.
hihih9
an inventor is a designer but a designer is not an inventor
inventor of fiberglass
The possessive form of the noun inventor is inventor's.Example: The inventor's patent was finally granted.
The inventor of the bifocal glasses was Benjamin Franklin.
Benjamin Franklin
Benjamin Franklin in America is usually regarded as the inventor of the Bifocal glasses .
Benjamin Franklin is credited with creating the first bifocal eyeglasses.
Yes.Some of Ben Franklin's inventions was the lightning rod,bifocal glasses, and the iron furnace stove.
Bifocal
no
on your head probably if you have them.
science bifocal
My gran has some bifocal glasses.
Yes he did
Doc.