Atlas Shrugged/Technology

Real-world technology in Atlas Shrugged:

Airplanes
Automobile
Diesel engines
Phonograph records
Radio
Telephone
Television (mentioned in Section252)
Traffic Signals

Fictional technology in Atlas Shrugged:

Refractor rays (Gulch mirage)
Rearden Metal 
Sonic death ray (Project X)
Voice activated door lock (Gulch power station)
Static electricity-powered motor
Palm-activated door lock (Galt's NY lab)
Shale-oil drilling
Portable X-Ray machine
Nerve-induction torture machine