New type of electric incandescent lamp in the vacuum, removable, allowing the replacement of any of its parts, including only the filament (Machine-translation by Google Translate, not legally binding)

摘要

A new type of electric incandescent lamp in vacuum, characterized by the fact that it is constituted by a glass globe, whose neck or upper part, by its external face, is threaded, which allows it to be linked to the internal part of the cap . (Machine-translation by Google Translate, not legally binding)