The Big Bang Theory Season 9 Episode 18 : The Application Deterioration

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.

NameThe Big Bang Theory Season 9 : The Application Deterioration
Air DateMarch 10th, 2016
GenreComedy
NetworkCBS
Production CompaniesChuck Lorre Productions, Warner Bros. Television
DirectorMark Cendrowski
Guest StarsLaura Spencer, Alessandra Torresani, Jim Holmes
Plot Keywordsnerd, geek, friends, scientist, science, sitcom
Simon Helberg
Simon Helberg
Howard Wolowitz
Johnny Galecki
Johnny Galecki
Leonard Hofstadter
Jim Parsons
Jim Parsons
Sheldon Cooper
Kunal Nayyar
Kunal Nayyar
Rajesh Koothrappali
Kaley Cuoco
Kaley Cuoco
Penny
Mayim Bialik
Mayim Bialik
Amy Farrah Fowler
Melissa Rauch
Melissa Rauch
Bernadette Rostenkowski

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