Did Mitchell invent aerial refueling or aerial torpedoes?

Did Billy Mitchell invent air-to-air refueling or aerial torpedoes?

No. Aerial torpedoes and aircraft capable of carrying them already existed, while Mitchell's own campaign concentrated on bombs.

Mitchell's energetic advocacy did not make him the inventor of aerial refueling or aerial torpedoes. Aircraft could already carry torpedoes, and their ability to sink ships was accepted. His own campaign focused on sinking ships with bombs. The dispute concerned what bombing could prove about air power and naval vulnerability.