Patents related to photo lenses

Started 6 months ago | Discussions thread
OP Dibyendu Majumdar Contributing Member • Posts: 758
Leitz 800mm f6.3

I think this one is for the Leica 800mm f6.3 which was one of the earliest 35mm lenses to feature ED like glass.

https://patents.google.com/patent/US3536379A/en

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