JF Ptak Science Books: Underwater Curtains, 1942-3

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Underwater Curtains, 1942-3

JF Ptak Science Books Quick Post

One thing is for certain with this dream of an amphibious car (Popular Mechanics, July 1942)--it certainly has a lot of curtains. I looked around a bit for the patent on this vehicle in the obvious places/keywords for patents 1935-1942 but couldn't find it. I did however bump into some other interesting amphibious craft, two of which I've reproduced below for their spherical natures and lack of curtains.