Reproductor for enhancing sounds in gramophones and phonographs acting with gas (elastic liquids)

The reproducer for enhancing sounds in gramophones and phonographs acting with gas (elastic liquids): No. 14055. Supponent.04/14/1904.Issue 07/28/1908 / h.A.Parsons.- [B.M .: B. and., 1908].-3551-3554 p., 1 l.Il .. -Description of the reproduct to enhance sounds in gramophones and phonographs acting with gases (elastic liquids).To the privilege of a foreigner Ch.A.Parsons (Ch. A. Parsons), in Newuchee, in England, declared on April 14, 1904 (okhr. St. No. 23739).Group V. No. 14055. July 28, 1908.I. Parsons, h.a..1.People (collection).Electronic copy source: PBOriginal storage location: VPTB FIPS