So that he would only have to carry one pair of glasses.
Benjamin Franklin.
I've read that Benjamin Franklin invented them...
he invented bifocals
No, but Benjamin Franklin.
Benjamin Franklin invented the bifocals
Yes, many people have bifocals.
The earliest appearance of Bifocals was when Benjamin Franklin wore them in the 1700's.
bifocals, electricity, lightning rod, franklin stove,odometer
Lightning rod, Franklin stove, bifocals, glass harmonica
Benjamin Franklin was president from 1785 to 1788. Benjamin Franklin invented the lightning rod, bifocals, the Franklin stove, a catheter, and a glass harmonica.
Benjamin Franklin is credited with the creation of the first pair of bifocals in the early 1760s.
Benjamin Franklin had very bad vision and could not read very well so he needed something so that he could see better that why he made bifocals