File:US496716-drawings-page-1.png

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US patent US496716A: Two-dimensional puzzles with slideable or rotatable elements or groups of elements, the main configuration remaining unchanged with rotatable concentric rings or discs.

Summary[edit]

Description
English: US patent US496716A: Two-dimensional puzzles with slideable or rotatable elements or groups of elements, the main configuration remaining unchanged with rotatable concentric rings or discs.
Date
Source

http://patentimages.storage.googleapis.com/b6/b7/a0/50ef3fa8bb8738/US496716-drawings-page-1.png from

http://patents.google.com/patent/US496716A
Author Manuel Benitez

Licensing[edit]

Public domain
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:US496716-drawings-page-1.png

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