Seine stärkste Waffe "His Best Force" - Harry Petersen has just made a big invention: the lamp without electrical supply. In American businessman Al Kinley, Harry hopes to find a financier for his idea, but Kinley does not show any interest. Details Casts Title Seine stärkste Waffe Release Date 1928-10-24 Runtime 01 Hours 20 Minutes Genres Drama Action Adventure Production Companies UFA Production Countries Germany Harry Piel... Harry Petersen... Philipp Manning... Al Kinley... Vera Schmiterlöw... Dolly Helmersum... Charly Berger... Ginew... Karl Platen... Anders... Alice Torning... Mrs Hansen...