Haha, that’s a super complicated question to answer as he had many many inventions. His main sponsor died in the titanic. I should also add he had some ideas about a “death ray” but he hated that term. He didn’t trust people and people did steal his inventions it seems or didn’t give him credit for his help.

Haha, that’s a super complicated question to answer as he had many many inventions. His main sponsor died in the titanic