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[NM020AAL], Technical Note, Thomas Alva Edison, October 22nd, 1885

Title: [NM020AAL], Technical Note, Thomas Alva Edison, October 22nd, 1885
Editor's Notes: "Dick-- In view of that patent [drawing] assigned to WU change the diagram thus [drawing] pen in center diaphragm & little weight"; drawing and description of 3 key features for "New patent on phonoplex" note on back to "look up Gray's patent on condenser around relay" also refers to Case 132
Author: Edison, Thomas Alva
Mentioned: Gray, Elisha; Dyer, Richard Nott
Date: 1885-10-22
Type: Technical Note
Subject: Patent assignments, licenses, and royalties; Phonoplex and railroad telegraphy
Folder ID: NM020-F
Microfilm ID: 44:695
Document ID: NM020AAL
URL: https://edisondigital.rutgers.edu/document/NM020AAL
Rights: Thomas Edison National Historical Park
Publisher: Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
Has Version: Archive.org Viewer, Microfilm Series Reel 44

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