File:Patent US1022384A on Georg Bahr's Normograph.png
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Georg Bahr's Normograph, one of the first lettering guides
Summary
editDescriptionPatent US1022384A on Georg Bahr's Normograph.png |
English: Georg Bahr's Normograph, one of the first lettering guides |
Date | |
Source | https://worldwide.espacenet.com/patent/search/family/003090681/publication/US1022384A |
Author | Georg Bahr |
Licensing
editPublic domainPublic domainfalsefalse |
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The text and illustrations of US patents published before March 1, 1989 are in the public domain unless the patent text contains a specific notice that portions are copyrighted. See 37 CFR 1.71(d), 37 CFR 1.84(s)
The original patent contains no such notice, so its contents are in the public domain. Note: This only applies to images published before March 1, 1989. Patents published after that date are most likely copyrighted, unless in the public domain for another reason, such as {{PD-ineligible}}. |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 07:09, 12 October 2023 | ![]() | 1,609 × 2,613 (370 KB) | Phreneticc (talk | contribs) | The image is aligned, additionally cropped and compressed losslessly. Explanation of increased weight of the file: at alignment there are distortions and to avoid them was used smoothing, after this operation appeared 64 shades of gray (in the original was black and white). |
18:07, 13 July 2020 | ![]() | 1,593 × 2,645 (65 KB) | Ain92 (talk | contribs) | Cropped 31 % horizontally, 22 % vertically using CropTool with precise mode. | |
18:01, 13 July 2020 | ![]() | 2,320 × 3,408 (71 KB) | Ain92 (talk | contribs) | Uploaded a work by Georg Bahr from https://worldwide.espacenet.com/patent/search/family/003090681/publication/US1022384A with UploadWizard |
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