Image:US Patent 774250.png
From Wikipedia, the free encyclopedia
- Image
- File history
- File links
Size of this preview: 800 × 491 pixel
Image in higher resolution (1660 × 1018 pixel, file size: 66 KB, MIME type: image/png)
 |
This is a file from the Wikimedia Commons. The description on its description page there is shown below. |
|
|
Image from U.S. Patent 774,250, the first electrical power plug
 |
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 links
The following pages on the English Wikipedia link to this file (pages on other projects are not listed):
- Domestic AC power plugs and sockets
- Talk:Domestic AC power plugs and sockets
- User:Ziltro/test1
