File:Le Roy escapement mechanism.jpg
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Summary
| Description |
English: Le_Roy_escapement_mechanism |
| Date | |
| Source | [1] |
| Author | Ferdinand Berthoud |
Licensing
|
This is a faithful photographic reproduction of a two-dimensional, public domain work of art. The work of art itself is in the public domain for the following reason:
The official position taken by the Wikimedia Foundation is that "faithful reproductions of two-dimensional public domain works of art are public domain".
This photographic reproduction is therefore also considered to be in the public domain in the United States. In other jurisdictions, re-use of this content may be restricted; see Reuse of PD-Art photographs for details. | ||||
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 10:12, 20 December 2009 | | 646 × 528 (59 KB) | World Imaging | better |
| 20:32, 19 December 2009 |  | 413 × 505 (49 KB) | World Imaging | {{Information |Description={{en|1=Le_Roy_escapement_mechanism}} |Source=[http://books.google.com/books?id=ch4JAAAAIAAJ&pg=PA1] |Author=Ferdinand Berthoud |Date=1802 |Permission= |other_versions= }} Category:Chronometer |
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