etc
Telephonic transmitter 1907/03/04 US1105066A , WEBB TALKING PICTURE Co
Multiplex transmitter 1909/04/07 US943915A, GEORGE R WEBB
https://www.trainorders.com/discussion/read.php?4,1168213
1913 kinetophone
https://muse.jhu.edu/pub/3/oa_monograph/chapter/2962376
https://muse.jhu.edu/pub/3/oa_monograph/book/84714
summary
Prepared in commemoration ofthe fiftieth anniversary of the talkies, The Birth of the Talkies is the first complete, authoritative account of how sound cinema was born. The story begins in 1877 with the invention of the phonograph, which was to provide silent cinema with its earliest form of recorded sound accompaniment. It concludes in 1929, the first year in which a talkie won an Academy Award. En route, the book recounts the various applications of the phonograph in supplying sound for the so-called silent cinema. It surveys the profusion of failures, half-failures, and abortive successes that led ultimately to Vitaphone and the international triumph of The Jazz Singer. Remarkable but virtually forgotten developments such as the Phono-Cinéma-Théâtre of 1900, the Filmsparlants of Léon Gaumont, and the Kinetophone shows of Thomas Alva Edison are described in detail, along with a wealth of information about related efforts to harness the phonograph to the cinematograph. All the early sound films of the Hollywood studios are described and discussed, and a concluding chapter surveys the effects of the sound revolution on the American film industry.
https://patents.google.com/patent/US1080265A/en
Patent
https://patents.google.com/?inventor=John+J+Comer&page=1
Differential microphone-transmitter 1910/10/24 US1033087A
Microphone 1910/11/28 US1079931A
Loud-speaking telephone system 1910/11/28 US1084070A
Resonator 1911/01/23 US1137187A
Differential-microphone repeater 1911/02/27 US1089534A
Repeater 1911/03/25 US1208296A
Reproducing and transmitting apparatus 1912/01/27 US1185877A
Telephone system 1912/12/19 US1185879A
Transmitter 1913/03/31 US1175048A
Transmitting apparatus 1913/07/16 US1137189A
Loud-speaking telephone system 1913/07/21 US1234134A
Transmitting apparatus 1914/02/24 US1209397A
Sound-reproducer 1914/07/24 US1230676A
Differential-microphone repeater 1914/09/12 US1137188A
Musolophone
A. B A. ENTERTAINED BY MUSOLOPHONE.
Construction News, November 1, 1913, page 12:
DEPARTMENT OF PUBLIC SERVICE.
Journal of the Proceedings of the City Council of the City of Chicago, Illinois, Volume 76:
https://fraser.stlouisfed.org/files/docs/publications/bls/bls_0420_1926.pdf
News and Entertainment by Telephone (1876-1930)
Automatic Ennuciator Patent
https://patents.google.com/patent/US2099868A/en
replace bell boy
https://earlyradiohistory.us/1910enun.htm
UNITED STATES EARLY RADIO HISTORY
1912 Yocht
Automatic Telephone and Enunciator Carnival Features
Telephony, August 24, 1912, pages 246-247:
1919 Ad
https://picryl.com/media/1919-automatic-enunciator-quiet-73e14b
1918 Ad
https://earlyradiohistory.us/1918big.htm
その他
https://earlyradiohistory.us/index.html
https://commons.wikimedia.org/wiki/File:1918_Automatic_Enunciator_loud.JPG
https://www.phonozoic.net 蓄音機の歴史（enunciator のパテント 1919 の記述あり）
https://www.phonozoic.net/patents/pt-1919.html
June 3, 1919
1,305,525 Transmitting Apparatus. John J. Comer, of Chicago, Illinois, Assignor to Automatic Enunciator Company, of Chicago, Illinois, a Corporation of Illinois. Executed Mar. 19, 1914. Filed Mar. 25, 1914, Serial No. 827,083. “My invention…relates to microphone transmitters adapted for use in connection with phonograph records.” Classification 369/152; 369/156.