The Big Bang Theory - Season 9, Episode 18
  • Episode Title: The Application Deterioration
  • Episode Run Time: 30
  • Episode Air Date: 2016-03-10 20:00
  • Episode Summary: 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.