Image:Railway car retarder.png
From Wikipedia, the free encyclopedia
Size of this preview: 800 × 514 pixels
Full resolution (2,800 × 1,800 pixels, file size: 574 KB, MIME type: image/png)
| This is a file from the Wikimedia Commons. The description on its description page there is shown below.
|
| Description |
English: Operable skate type of railway car retarder, Fig. 2
|
|---|---|
| Source | |
| Date |
1974-08-06 |
| Author |
Peter M. Noble |
| Permission (Reusing this image) |
United States Patent |
 |
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 | 10:15, 18 May 2007 | 2,800×1,800 (574 KB) | Densha Gokko | ({{Information |Description={{en|Operable skate type of railway car retarder, Fig. 2}} |Source=[http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=3827533 U.S. Patent No. 3,827,533] |Date=1974-08-06 |Author=Peter M. Noble |Permission=United States Pate) |
File links
The following pages on the English Wikipedia link to this file (pages on other projects are not listed):
