Incandescent lamp with several filaments for urban lighting and susceptible to increase or decrease its intensity of lighting (Machine-translation by Google Translate, not legally binding)

摘要

Incandescent lamp is claimed, with several filaments, for urban lighting and susceptible to increase or decrease its intensity of lighting, characterized by being integrated by more than one filament, all of them switchable simultaneously or alternatively so that some are replaced by the others or connected to the time if they wish. (Machine-translation by Google Translate, not legally binding)