File:Patent US1022384A on Georg Bahr's Normograph.png
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Size of this preview: 369 × 599 pixels. Other resolutions: 148 × 240 pixels | 295 × 480 pixels | 473 × 768 pixels | 630 × 1,024 pixels | 1,609 × 2,613 pixels.
Original file (1,609 × 2,613 pixels, file size: 370 KB, MIME type: image/png)
Captions
Captions
Georg Bahr's Normograph, one of the first lettering guides
Summary
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| Description |
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
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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}}. |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| 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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