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Bifocals are important for those with impaired vision, so they can see both far and near without taking off their glasses or switching them. They were invented by Benjamin Franklin in 1700â??s.
What else can I help you with?
What do progressive bifocals cost?
There are different types of bifocals and different sizes so there are different costs.
Is Benjamin Franklin's invention of the bifocals still being used today?
Yes, many people have bifocals.
What building were the bifocals glasses?
You left them in the car.
What did Benjaman Franklin invent for better sight?
The Bifocals
What did benjmian Franklin invent in 1900-2010?
bifocals
What is a sentence with the word bifocals in it?
Please help me find my bifocals.
Why are bifocals important?
because bifocals are still used today and without bifocals you would have to have 2 pairs of glasses that's why its Important
What are some changes of bifocals?
bifocals changed in size, shape, and magnification.
What are glasses that can focus at two different lengths called?
Bifocals.
What did benjamen invent?
* lightning rod * Franklin stove * odometer * bifocals* lightning rod * Franklin stove * odometer * bifocals* lightning rod * Franklin stove * odometer * bifocals* lightning rod * Franklin stove * odometer * bifocals* lightning rod * Franklin stove * odometer * bifocals* lightning rod * Franklin stove * odometer * bifocals
What is the bifocals patent number?
Bifocal lenses as a concept were not patented; there are dozens of patents related to bifocals, bifocal contacts, and processes to make bifocals.
What is a sentence using the word bifocals?
The bifocals he bought were used. The lower lenses on my bifocals allow me to read more easily.
How many syllables does bifocals have?
The word bifocals has three syllables. (bi-fo-cals)
What do progressive bifocals cost?
There are different types of bifocals and different sizes so there are different costs.
Has the bifocals saved lives?
The bifocals haved saved lives by letting people see clearly.
Where did bifocals glasses take place?
The earliest appearance of Bifocals was when Benjamin Franklin wore them in the 1700's.
Is Benjamin Franklin's invention of the bifocals still being used today?
Yes, many people have bifocals.
