Category:Ellehammer helicopter
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experimental aircraft built in Denmark in 1912 | |||||
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First flight |
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English: Ellehammer helicopter
Media in category "Ellehammer helicopter"
The following 2 files are in this category, out of 2 total.
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Ellehammer 1914.jpg 357 × 236; 29 KB
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Ellehammer 1935.jpg 453 × 209; 34 KB