File:Automatic snow chain system.gif Source: en.wikipedia.org/wiki/File:Automatic_snow_chain_system.gif
Summary
[edit]United States Patent No. 6830134 of August 17, 1915. (Automatic snow chain system)
Patent granted to the American inventor W.H. Putnam.
Source: http://www.onspot.com/indhisfr.htm
Licensing
[edit] | This image is in the public domain in the United States. In most cases, this means that it was first published prior to January 1, 1930 (see the template documentation for more cases). Other jurisdictions may have other rules, and this image might not be in the public domain outside the United States. See Wikipedia:Public domain and Wikipedia:Copyrights for more details. |  |
 | This media file is either in the public domain or published under a free license, and contains no inbound file links. If this media file is useful, then it should be transferred to the Wikimedia Commons. If this media is not useful, then please propose it for deletion or list it at files for discussion. |
 | This file is a candidate to be copied to Wikimedia Commons.
Any user may perform this transfer; refer to Wikipedia:Moving files to Commons for details. If this file has problems with attribution, copyright, or is otherwise ineligible for Commons, then remove this tag and DO NOT transfer it; repeat violators may be blocked from editing. Other Instructions
| ||
| |||
