File:Windsurfpatent.jpg
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Windsurfpatent.jpg (320 × 317 pixels, file size: 13 KB, MIME type: image/jpeg)
Summary
Illustration from US Patent 3,487,800, issued to inventors Jim Drake and Hoyle Schweitzer on January 6, 1970
Licensing
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:45, 8 January 2017 | ![]() | 320 × 317 (13 KB) | 127.0.0.1 (talk) | <p>Illustration from US Patent 3,487,800, issued to inventors Jim Drake and Hoyle Schweitzer on January 6, 1970 </p> |
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