Schubert's Music Kite - DE40579
In 1887, Hugo Woldemar Schubert patented what is apparently the first German kite patent. It shows a kite with some kind of whistle or music device. Full Patent.
December 29, 2006
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In 1887, Hugo Woldemar Schubert patented what is apparently the first German kite patent. It shows a kite with some kind of whistle or music device. Full Patent.
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