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Leonard, Sheldon, and Wolowitz run into problems when they file for a patent for their infinite persistence gyroscope. Also, Penny, Amy and Bernadette give Koothrappali dating advice when Emily reaches out to him after their breakup.
First Air Date : Sep 24, 2007
Last Air date : May 16, 2019
Episode : 279 Episode
Season : 12 Season
Runtime: 22:14 minutes
Studio: CBS
Country: United States of America