Who invented it

Edit Answers
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Across
  1. 2. Lock
  2. 3. Plasma Blood Bag
  3. 5. Door Knob
  4. 7. Clothes Dryer
  5. 9. Golf Tee
  6. 11. Mailbox
  7. 12. Ironing Board
Down
  1. 1. Ice Cream Scoop
  2. 4. Auto Cut Off Switch
  3. 6. Curtain Rod
  4. 8. Gas Mask
  5. 10. Auto Fishing Device