Non-thermionic ballast-free energy-efficient light-producing...
Non-thermionic fluorescent lamps and lighting systems
Nonlinear inductor with magnetic field reduction
Nonthermionic hollow anode gas discharge electron beam source
North-south pincushion corrected deflection circuit
North-south pincushion distortion correction circuit
Notch cutting circuit with minimal power dissipation
Notch gap transformer and lighting system incorporating same
Novelty inert gas device having separable components
Null-field magnetron apparatus with essentially flat target
Numerical controlled colour light source system