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File:Back US2913957A (Zoomar, 1959).svg

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English: Zoomar lens for still cameras, patented by Frank Back in 1959. Redrawn from US Pat. 2,913,957; see also US Pat. 2,902,901.
Date
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Author Mliu92

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''Zoomar'' lens for still cameras, patented by Frank Back in 1959.

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1 May 2023

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current20:35, 1 May 2023Thumbnail for version as of 20:35, 1 May 2023150 × 100 (5 KB)Mliu92Uploaded own work with UploadWizard

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