High-pressure discharge lamp with stabilized arc
High-pressure gas discharge lamp
High-pressure metal halide discharge lamp and a lighting...
High-pressure metal halide lamp having three part electrode...
High-pressure sodium discharge lamp comprising a discharge arc s
High-pressure sodium lamp
High-pressure sodium lamp
High-pressure, thermally highly loaded discharge lamp, and metho
Hollow electrodes for low pressure discharge lamps, particularly
Hollow electrodes for low pressure discharge lamps, particularly
Homogeneous cathode unit
Hooked electrode for arc lamp
Horizontal burning hid lamps and arc tubes