Dark sky friendly lamp and housing combination apparatus
Dental astral lamp
Device for adjusting brightness of brake lamps
Diffuse ring illuminator
Diffused light projector
Dimming device for a searchlight
Directional adjustable swivel lighting-fixture
Dual purpose lamp assembly for use, for example, as a combined f
Dual purpose lamp assembly of improved light distribution for us
Dual reflector high bay lighting system
Dual reflector lighting system