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= Adele de Berri = Adele Roessner de Berri (Born July 19, 1885) was an American inventor who revolutionized the film industry in the early 20th century. Adele de Berri's work pioneered the way for new technologies and films and her first invention helped popularize the term "silver screen," a term that is now synonymous with the film industry as a whole. She founded Da-Lite, an audiovisual company which still exists today under Legrand AV. In 2009 de Berri was recognized for her contributions and was posthumously awarded the first ever InfoComm International Pioneers of AV award. Since 2013 the Audiovisual and Integrated Experience Association, or AVIXA, has awarded the Adele de Berri Pioneers of AV Award to those who have a significant impact on the industry of audio-visual technology.

Life
Adele de Berri was born in on July 19, 1885 in Winona Ward 3, Minnesota to parents William Roessner and Louisa C Roessner. She was the eldest of three, having two younger brothers named William L Roessner and Clarence H Roessner. She began living in her New York City Residence at Manhattan Ward 12 in 1910. In 1920 that de Berri moved to Chicago Ward 23 in Cook, Illinois. Sometime between then and 1928 de Berri married and later divorced her first husband Edmond Moffot de Berri, with whom she had no children. She married her second husband Jacob Cornelius Heck in 1928 and again did not have any children. Adele de Berri died on October 24, 1949, shortly after the death of Jacob Cornelius Heck. She was survived by her younger brother William L Roessner, who died in 1973.

Career
In 1909 she founded Da-Lite under the name De Berri Screen and Scenic Company in Chicago. While living in New York City de Berri earned her living selling aluminum products covered in a reflective silver paint. Using her knowledge of this silver paint, de Berri worked in the rented out abandoned church basement in Chicago that served as De Berri Screen and Scenic Company's headquarters and invented the first Silver Screen, which was first used in nickelodeon movie theaters. Adele de Berri's other inventions include the Da-Tone projection screen, which allowed for movie audiences to hear the first non-silent films or "talkies," the glass-beaded projection screen surface and the electric projection screen, which saw a lot of use outside of the cinema.