Possible Clues:

• A famous man, yet there's no airs about him
• Inventor turned up when match is over
• Founder of General Electric
• Inventor brought up free of impertinence?
• Inventing immortal
• Inventor with a bright idea?
• Kinetoscope inventor
• When this inventor turns up the game's over
• Inventing "wizard"
• The inventor who turned up without putting on any airs