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[NV12156] Technical Note, September 19th, 1877

Title: [NV12156] Technical Note, September 19th, 1877
Editor's Notes: This is a retrospective note drawn on or after 2 Jan 1878 but discusses what TAE did about middle of Sept 1877 one drawing of diaphragm and lever from 19 Sept: for recorder/reproducer claims "tried and used and publicly exhibited about that time" [is there corr about this?] on back "Interference of A Wilford Hall H.H. Cooley Rockport, NY"
Author: Edison, Thomas Alva
Date: 1877-09-19
Type: Technical Note
Subject: Telephone
Folder ID: NV12-F
Microfilm ID: 4:73
Document ID: NV12156
URL: https://edisondigital.rutgers.edu/document/NV12156
Rights: Thomas Edison National Historical Park
Publisher: Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
License: CC0 1.0 Universal
Has Version: Archive.org Viewer, Microfilm Series Reel 4

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