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Licensing[edit]
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The author died in 1924, so this work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 90 years or less.
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1923.
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This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.
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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 [2], 37 CFR 1.7(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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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment |
| current | 11:38, 22 September 2014 |  | 520 × 320 (1 KB) | SiBr4 | Corrected star sizes per newly found construction sheet (see talk page) |
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