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[NV14043] Technical Note, February 20th, 1878

Title: [NV14043] Technical Note, February 20th, 1878
Editor's Notes: Coil design notes and phono tin foil to show principle
Author: Batchelor, Charles
Date: 1878-02-20
Type: Technical Note
Subject: Telephone; Cylinder phonograph
Folder ID: NV14-F
Microfilm ID: 4:184
Document ID: NV14043
URL: https://edisondigital.rutgers.edu/document/NV14043
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