File:1917-Rosenzweig-patent-counts.jpeg
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Summary
Counts of patents and protection certificates (filings) in Rosenzweig, 1917, Systematic collection of patents issued in Russia via VPTB.
Note handwritten additions, we don't know by whom but Rosenzweig himself is possible, going to 1917 for patents granted and 1924 for filings.
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 13:32, 6 February 2024 | | 1,488 × 2,040 (429 KB) | LTA (talk | contribs) | Counts of patents and protection certificates (filings) in Rosenzweig, 1917, Systematic collection of patents issued in Russia via VPTB. Note handwritten additions, we don't know by whom but Rosenzweig himself is possible, going to 1917 for patents granted and 1924 for filings. |
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