Improvements in the appliances employed in the photomechanical workshops and in a special way in the photography and similar machines (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in the devices used in the photomechanical workshops and in a special way in the gravure and similar machines, characterized essentially because the device is equipped, along with the camera and its accessories, with automatic projectors that are simultaneously provided with lamps electronic discharge "flash" and incandescent filament lamps each group of which is available inside the corresponding projector. (Machine-translation by Google Translate, not legally binding)