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[NS7704ZBV], Technical Note, Thomas Alva Edison, March 23rd, 1877

Title: [NS7704ZBV], Technical Note, Thomas Alva Edison, March 23rd, 1877
Editor's Notes: sexty: uses tuning fork; sep. item on next frame, same date "anti-continuity reverser for Quad. trans.
Author: Edison, Thomas Alva
Date: 1877-03-23
Type: Technical Note
Subject: Multiple telegraphy (duplex, quadruplex)
Folder ID: NS7704-F
Microfilm ID: 7:658
Document ID: NS7704ZBV
URL: https://edisondigital.rutgers.edu/document/NS7704ZBV
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 7