INVENTIONs & INVENTORs

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Across
  1. 2. Paul Allen's friend who both created Microsoft Windows
  2. 5. someone who co-founded Paypal, Tesla, SpaceX, and others
Down
  1. 1. Alexander Graham Bell's invention
  2. 3. Wright brothers' invention
  3. 4. Guglielmo Marconi's invention