File:US4708078 fig 10.png

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Summary

Description
English: "Propulsive wing with inflatable armature. [...] The wing can be used in sliding sports, yachting and gliding."
Public domain
This work is in the public domain because it was published in the United States between 1978 and February 1989, inclusive, without a copyright notice, and its copyright was not subsequently registered with the U.S. Copyright Office within 5 years. For further explanation, see Commons:Hirtle chart as well as a detailed definition of "publication" for public art after 1977.
Unless its author has been dead for several years, it is copyrighted in the countries or areas that do not apply the rule of the shorter term for US works, such as Canada (70 pma), Mainland China (50 pma, not Hong Kong or Macau), Germany (70 pma), Mexico (100 pma), Switzerland (70 pma), and other countries with individual treaties. See this page for further explanation.

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Date
Source US patent 4708078, fig 10
Author Bruno T. Legaignoux, Dominique M. Legaignoux

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depicts

inception

16 November 1984

File history

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Date/TimeThumbnailDimensionsUserComment
current09:22, 28 November 2018Thumbnail for version as of 09:22, 28 November 20181,067 × 1,073 (54 KB)wikimediacommons>Marc Lacoste{{Information |description ={{en|1="Propulsive wing with inflatable armature. [...] The wing can be used in sliding sports, yachting and gliding." {{PD-US-1978-89}}}} |date =1984-11-16 |source =[https://patents.google.com/patent/US4708078 US patent 4708078], fig 10 |author =Bruno T. Legaignoux, Dominique M. Legaignoux }} Category:U.S. Patent drawings Category:Kitesurfing

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