You are seeing Ask web results for DICTOGRAPH.
|
|
The Dictograph was one of the early eavesdropping devices. The Literary Digest writes about eavesdroppers and how they used this 'bug' in this 1912 article. ... The practical possibilities of the dictograph have become pretty well known since William J. Burns used it in his preventive work. It is positively unsafe for...
|
|
|
Portable Detective Dictograph Audio Amplifier, 1907 ... The Portable Detective Dictograph Audio Amplifier from 1907 was made by General Acoustic Company, Jamaica, New York and invented by one K. Monroe Turner. This is one of the first audio amplifiers.
|
|
|
The Dictograph ... From 1902 to 1913 the Dictograph Products Company Inc. , formed to handle the telephone part of the business, patented the basics of their system. The company and the Dictograph name were registered in 1907 by Turner and his financier, W Donnan.
|
|
|
|
|
Dictograph - Definition of Dictograph at Dictionary.com a free online dictionary with pronunciation, synonyms, and translation of Dictograph. Look it up now! ... Use dictograph in a Sentence...
|
|
|
This is an early hand-held carbon microphone made by the Dictograph Corporation in the 1920's. Dictograph was primarily a manufacturer of office equipment, and early their product line included wax-cylinder dictation machines and intercom systems.
|
|
|
Today in History ... Ask a Question ... The makers of this instrument spell it dictograph.
|
|
|
Turner was president of the General Acoustics Company, maker of the Acousticon hearing aid, the Dictograph microphone, and the Dictograph intercom system that is the subject of this article. The heart of his system was a fairly conventional but very sensitive microphone which he called the Metrophone.
|
|
|
reklame,adictograph,total,solutions,webdesign...
|
