Overview: A run-through of the needs that inspired some of America's most influential inventions.
Watch Trailer
First Air Date: Jan 06, 1973Last Air date: Dec 17, 2009Season: 7 SeasonEpisode: 65 EpisodeRuntime: 3 minutesQuality: HDIMDb: 7.40 / 10 by 29 usersPopularity: 8.187Language: English