The Navigable Balloon was patented by Ferdinand von Zeppelin in Germany on 31st August 1895. It was later patented in the United States in 1899. The term zeppelin is now used for all types of rigid airships.
The Navigable Balloon was patented by Ferdinand von Zeppelin in Germany on 31st August 1895. It was later patented in the United States in 1899. The term zeppelin is now used for all types of rigid airships.
