The Apple iPod was invented by Kane Kramer in 1979. Uh-huh! Apple even admits it. Apple even hired the inventor to testify for Apple in a patent lawsuit - not filed by Kramer. He made a prototype device that would almost play one entire song. Three and a half minutes. But he couldn’t raise the money to proceed and he let the patent expire.
Apple got themself in a legal jam, and looked up Kramer to help them out. So far, all he has earned is money for testifying.