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  1. D

    Patenting a design

    How do you decide whether or not an airplane design should be patented?
  2. A

    discussion of new aircraft

    I would like to discuss an old patent - US Patent 3633849. It was filed on July 28, 1969. The patent discloses a flying craft in which a stationary cabin is supported within a rotating shell. It's like a gyroscope, reversely constructed. Instead of mounting a spinning disc on a stationary...
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