new inventions of the twenties

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Across
  1. 2. when you get a small cut this covered it to stop then bleeding
  2. 5. place to buy fuel for automobiles
  3. 7. helps flow of traffic on crossroads
Down
  1. 1. when making a milkshake or smoothie you use
  2. 3. (wasn't made in twenties but popular during twenties)
  3. 4. sucked up dirt
  4. 6. leading supply of entertainment in the twenties