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d’Equevilley-Montjustin 1908 Multiplane
 A 1908 patented multi-wing machine design by Raymond d’Equevilley-Montjustin – otherwise known as the Marquis d’Equevilley – very characteristic in its circular hoop construction and several levels of planes. The pilot was to stand in flight and direct the machine by leaning his body to the left or right, and although the machine was continuously developed adding or diminishing the number of “wings”, it failed to ever leave the ground. D’Equevilley, a quite capable engineer and designer, had nearly fifty patents to his name, and is often credited as the person who perfected the snorkel that is used on submarines.
 1908
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