[N319233], Technical Note, Thomas Alva Edison, April 21st, 1886

https://edisondigital.rutgers.edu/document/N319233

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Title

[N319233], Technical Note, Thomas Alva Edison, April 21st, 1886

Editor's Notes

drawing "Phonoplex Short cktg phone partially to weaken outgoing signals & also to only use battery while sending a dot or dash"; p. 234 drawings phonoplex; p. 235 drawing "Phonoplex Copy"; pp, 236-58 phonoplex drawings some dated

Date

1886-04-21

Folder/Volume ID

N319-F

Microfilm ID

43:279

Document ID

N319233

Publisher

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
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