Lighting apparatus with batwing light distribution
ES435337A1
Optical device to improve the distribution of luminous flow in lighting appliances by fluorescent tubes. (Machine-translation by Google Translate, not legally binding)
US4004145A
Nil-luminance lighting panel
US3866036A
Fluorescent fixture with optical device
ES414498A1
Non-luminance lighting panel
ES392946A1
Improvements in the prismatic lighting platforms. (Machine-translation by Google Translate, not legally binding)
ES357157A1
Mixed lighting apparatus of prisms and reflector. (Machine-translation by Google Translate, not legally binding)
GB1209377A
Lighting fitting
IE29783L
Electric-lighting system
ES306890A1
Catoptrical-dioptrical device for electric lighting
GB1088579A
A catoptrical-dioptrical device for electric lighting
ES285992A1
Optical system for electrical lighting appliances (Machine-translation by Google Translate, not legally binding)
ES259248A1
Improvements in self-regulated alternators (Machine-translation by Google Translate, not legally binding)
