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[NV14084], Technical Note, Thomas Alva Edison, Charles Batchelor, April 12th, 1878

Title: [NV14084], Technical Note, Thomas Alva Edison, Charles Batchelor, April 12th, 1878
Editor's Notes: circuit diagram with multiple coils for single hand unit; witnessed by an R. MacKintosh who is he?
Author: Batchelor, Charles; Edison, Thomas Alva
Date: 1878-04-12
Type: Technical Note
Subject: Telephone
Folder ID: NV14-F
Microfilm ID: 4:228
Document ID: NV14084
URL: https://edisondigital.rutgers.edu/document/NV14084
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