Poster of Cast and Crew in The Big Bang Theory - Season 9 - Episode 18 - The Application Deterioration

The Big Bang Theory - Season 9 - The Application Deterioration (Episode 18)

Plot: 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
Episode Aired On:
Thursday, March 10 2016
8 years ago