| 摘要 |
316,613. I. G. Farbenindustrie Akt.- Ges., (Assignees of Universum-Film Akt.- Ges.). Aug. 1, 1928, [Convention date]. Bulbs; filaments.-The walls of the bulb of an incandescent lamp having an eccentrically placed filament, and employed in a kinematograph projector, are made of soft glass; the lamp is cooled while in use. As shown, the lamp 1 has a filament 2 arranged near a condenser 4, and an air nozzle 6 serves for cooling. |
