File:Back US2913957A (Zoomar, 1959).svg
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Summary
| Description |
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 | |
| Source | Own work |
| Author | Mliu92 |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 20:35, 1 May 2023 | | 150 × 100 (5 KB) | Mliu92 | Uploaded own work with UploadWizard |
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