kinobogenlampe for the illumination of two adjacent bildfensternSCHERING HELMUTH DR
circuit for operation of kinobogenlampenSCHUELER LEO
method and device for verlaengerung the burning of arc lamps, in particular kinobogenlampenSCHULZE ALFREDWAGNER MANFREDSCHERING DR HELMUTHPIERSCHEL GERHARD
foldable electrical bogenlampe, particularly for photographic and kinozwecke.H. TRAUT, MUENCHEN, G. M. B. H.