File:US2226967A, Edward Chellus, p.1.jpg
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| Description |
English: US patent of Edward J. Chellus, which apply basic oxygen process to stainless steel production. https://patents.google.com/patent/US2226967A |
| Date | |
| Source | https://patentimages.storage.googleapis.com/4d/07/8b/ab57bbc385cd7d/US2226967.pdf |
| Author | Edward J. Chellus |
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}}. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 10:42, 28 January 2020 | | 1,324 × 1,952 (1.31 MB) | Yapparina (talk | contribs) | User created page with UploadWizard |
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