File:Pat248872Fig1.jpg
No higher resolution available.
Pat248872Fig1.jpg (320 × 360 pixels, file size: 30 KB, MIME type: image/jpeg)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
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. |
| Source |
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. |
| Author |
Licensing
|
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}}. |
Original upload log
Transferred from en.wikipedia to Commons using For the Common Good.
The original description page was here. All following user names refer to en.wikipedia.
| Date/Time | Dimensions | User | Comment |
|---|---|---|---|
| 13:11, 17 September 2011 | 320 × 360 (30,776 bytes) | w:en:The Monster (talk | 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. |
|
This media file is uncategorized.
Please help improve this media file by adding it to one or more categories, so it may be associated with related media files (how?), and so that it can be more easily found.
Please notify the uploader with {{subst:Please link images|File:Pat248872Fig1.jpg}} ~~~~ |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 15:19, 29 September 2018 | | 320 × 360 (30 KB) | Arlene the bean | Transferred from en.wikipedia: see original upload log above |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
