Discharge lamp with wire frame having dual cantilever resilient
Discharge tube having a double-tube type structure
Display tube with fluid cooled window
Dome shield for protected metal halide lamps
Double bulb type halogen lamp in which a space between inner and
Double jacket lamp
Double-ended metal halide arc discharge lamp with electrically i
Double-enveloped halogen bulb provided with protuberances in the
Double-enveloped lamp having a shield surrounding a light-source
Dual arc tube discharge lamp having a lamp frame with coplanar s
Dual-envelope high-pressure discharge lamp construction, and met