Crossword puzzle clue "bifocal franklin invention"

Here are the possible solutions for bifocal franklin invention clue

Answer
Clue
Relevancy
lens
Clue
Bifocal ___ (Franklin invention)
Bifocal ___ (Benjamin Franklin invention)
Bifocal, for one
Bifocal, e.g.
Bifocal
Definition
a piece of transparent matter with one or both surfaces curved to cause regular convergence or divergence of rays passing through it
lightningrod
Clue
Franklin invention
Ben Franklin invention
rod
Clue
Lightning ___ (invention of Benjamin Franklin)

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