Crossword Puzzle Innovator of early TV

Clue: Innovator of early TV

Early Atari offering (PONG with 4 letters)
Early offspring (CAIN with 4 letters)
Early TV offering (GMA with 3 letters)
Early Microsoft offering (DOS with 3 letters)
Leaves the office early? (RESIGNS with 7 letters)
Leaves early, as an office (VACATES with 7 letters)
Early TV comic innovator (KOVACS with 6 letters)
Spy's reaction to an early retirement offer? (DESKJOBINTERESTSAGENT with 21 letters)
Scout's rider of early TV (TONTO with 5 letters)
Early TV surname (DOODY with 5 letters)