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Paulitschky - Dirigible aircraft for aerial navigation, French Patent 375975 of 1907 (1907)

Carl Paulitschky and Rosa Paulitschky · leaf 0

An illustration from Paulitschky - Dirigible aircraft for aerial navigation, French Patent 375975 of 1907, 1907, leaf 0
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Patents · French patents · Aircraft · Flying machines · Helicopters

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