1940 Inventions

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Across
  1. 1. Richard and Maurice McDonald made this fast-food place.
  2. 5. Albert Einstein wanted to use this to end a war.
Down
  1. 2. What Arthur Dickinson made.
  2. 3. What Peter Goldmark is most famous for.
  3. 4. A automobile that can fly made by Sikorsky, Igor I.