[Answer] Who invented bi-focal glasses?

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Aug 28, 2021

[Answer] Who invented bi-focal glasses?

Step 1 : Introduction to the question "Who invented bi-focal glasses?"

...1. Benjamin Franklin
2. Thomas Edison
3. Alexander Graham Bell
4. Leonardo da Vinci

Step 2 : Answer to the question "Who invented bi-focal glasses?"

Benjamin Franklin:

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Step 3 : Disclaimer & Terms of Use regarding the question "Who invented bi-focal glasses?"

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