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Among the later improvements by the Volta Associates, the Graphophone used a cutting stylus to create lateral zig-zag grooves of uniform depth into the wax-coated cardboard cylinders, rather than the up-down vertically-cut grooves of Edison's contemporary phonograph machine designs. [1] [2] Dictaphone cylinder dictation machine from early 1920s.
Dictaphone wax cylinder dictation machine Dictaphone on display in a museum Dictaphone was an American company founded by Alexander Graham Bell that produced dictation machines . It is now a division of Nuance Communications , based in Burlington, Massachusetts .
The Model 224 is a portable dictation machine released in 1965 as a follow-on to the much larger Model 214. The combination of its low weight and small form factor with integrated microphone and a very quiet motor, made it a sales success, especially as it was very easy to demonstrate.
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Thanks to its compact and lightweight design, which you can easily bring from room to room (and even to car), and large-capacity tank, which holds up to 48 ounces of liquid at a time, the cleaning ...
Duplicating machines were the predecessors of modern document-reproduction technology. They have now been replaced by digital duplicators, scanners , laser printers , and photocopiers , but for many years they were the primary means of reproducing documents for limited-run distribution.
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