Image:Grey Goose ornithopter patent.png
From Wikipedia, the free encyclopedia
Size of this preview: 756 × 600 pixels
Full resolution (1,133 × 899 pixels, file size: 206 KB, MIME type: image/png)
| This is a file from the Wikimedia Commons. The description on its description page there is shown below.
|
[edit] Summary
| Description |
Diagram of Caldwell's ornithopter design from US patent 1,730,758 |
|---|---|
| Source |
http://www.humanpoweredhelicopters.org/patents/US1730758A1_Caldwell.pdf |
| Date |
1927 |
| Author |
J. Edward Caldwell |
| Permission (Reusing this image) |
see below |
[edit] Licensing
 |
In most countries, the text and illustrations of patents are excused for copyright and can be considered to be in the public domain. In some countries, such as the United States, text of patents may be copyrighted but is free for distribution in any form. The actual invention depicted may however still be patented if its patent has not expired. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 12:14, 1 November 2007 | 1,133×899 (206 KB) | Maury Markowitz | ({{Information |Description=Diagram of Caldwell's ornithopter design from US patent 1,730,758 |Source=http://www.humanpoweredhelicopters.org/patents/US1730758A1_Caldwell.pdf |Date=1927 |Author=J. Edward Caldwell }} ) |
File links
The following pages on the English Wikipedia link to this file (pages on other projects are not listed):
