File:PSM V29 D196 Gravity clock escapement mechanism.jpg

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Description Gravity clock escapement mechanism
Date
Source Popular Science Monthly Volume 29
Author Unknown authorUnknown author
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Public domain
Public domain
This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
United States
United States
This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.

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Date/TimeThumbnailDimensionsUserComment
current06:00, 15 September 2010Thumbnail for version as of 06:00, 15 September 20101,291 × 2,310 (83 KB)Ineuw{{Information |Description = Gravity clock escapement mechanism |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_29.djvu/196 |Date = 1886 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} [[Category:Popular
05:52, 15 September 2010Thumbnail for version as of 05:52, 15 September 20101,291 × 2,310 (90 KB)Ineuw{{Information |Description = Gravity clock escapement mechanism |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_29.djvu/196 |Date = 1886 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} [[Category:Popular

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