Archivo:Pat248872Fig1.jpg
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Pat248872Fig1.jpg (320 × 360 píxeles; tamaño de archivo: 30 kB; tipo MIME: image/jpeg)
Resumen
| Descripción |
English: Illustration from 1881 US Patent 248872, for a perpetual calendar paperweight. The upper section is rotated to reveal one of seven lists of years (splitting leap years) for which the seven calendars below apply. |
| Fuente |
Figure 1 from US Patent 248872, granted Nov 1, 1881 to Robert McCurdy for a perpetual calendar paperweight. As one of the drawings submitted by McCurdy to the USPTO to substantiate his patent claims, it is public domain. |
| Autor |
Licencia
|
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}}. |
Registro original de carga
Transferido desde en.wikipedia a Commons usando For the Common Good.
Aquí se muestra la página de descripción original. Los siguientes nombres de usuario se refieren a en.wikipedia.
| Fecha y hora | Dimensiones | Usuario | Comentario |
|---|---|---|---|
| 13:11, 17 September 2011 | 320 × 360 (30,776 bytes) | w:en:The Monster (discusión | contribs.) | Figure 1 from US Patent 248872, granted Nov 1, 1881 to Robert McCurdy for a perpetual calendar paperweight. As one of the drawings submitted by McCurdy to the USPTO to substantiate his patent claims, it is public domain. |
Historial del archivo
Haz clic sobre una fecha y hora para ver el archivo tal como apareció en ese momento.
| Fecha y hora | Miniatura | Dimensiones | Usuario | Comentario | |
|---|---|---|---|---|---|
| actual | 16:19 29 sep 2018 | | 320 × 360 (30 kB) | wikimediacommons>Arlene the bean | Transferred from en.wikipedia: see original upload log above |
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