Lee_US1739512A_(Speedic,_1924).svg


Summary

Description
English: Speedic lens design by Horace William Lee for Kapella. Redrawn from US Patent 1,739,512A (1924).
Date
Source Own work
Author Mliu92

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Captions

''Speedic'' lens design by Horace William Lee for Kapella

Items portrayed in this file

depicts

6 February 1924 Gregorian

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