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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 March 1, 1989 without a copyright notice, and its copyright was not subsequently registered with the U.S. Copyright Office within 5 years. 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 (50 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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16 November 1984

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Date/TimeThumbnailDimensionsUserComment
current 09:22, 28 November 2018 Thumbnail for version as of 09:22, 28 November 20181,067 × 1,073 (54 KB)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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