Berliner, Emile. 1851-1929. American inventor, b. Hanover, Germany. To U.S. (1870); invented the Berliner loose-contact telephone transmitter or microphone (1877); perfected various features of
telephone; introduced (pat. 1878) use of induction coil in transmitter. Invented gramophone talking machine (1887) and a method of duplicating disk records; invented and first used (1908) lightweight internal-combustion
motor later used for airplanes; invented (1925) acoustic tile and acoustic cells for insuring good acoustics in halls, etc.