File:Golubev-1909-GroupV.jpeg
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Summary
First page of a list of patents classified RU Group V in 1909. Golubev, 1924, index of patents issued during the period 1909–1917 via VPTB.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 10:03, 10 February 2024 | | 1,296 × 1,927 (479 KB) | LTA (talk | contribs) | First page of a list of patents classified RU Group V in 1909. Golubev, 1924, index of patents issued during the period 1909–1917 via VPTB. |
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