Who invented bifocals?


Who knows who invented bifocals please write your answer in the comment section below. If you also know when was the bifocals invented be free to write it too. If you want to read my already written articles about inventions and don’t want to guess new ones then you need to look in a different category then “Guess who and when” on my website.

who invented bifocals

who invented bifocals


invention of bifocals

invention of bifocals


bifocals invention

bifocals invention


bifocal invention

bifocal invention


when was the bifocals invented

when was the bifocals invented

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