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[D8230L], Letter from Francis Robbins Upton to Thomas Alva Edison, January 20th, 1882

Title: [D8230L], Letter from Francis Robbins Upton to Thomas Alva Edison, January 20th, 1882
Editor's Notes: Lamps with charcoal inside did not show longer life than the usual kind of lamp.
Author: Upton, Francis Robbins
Recipient: Edison, Thomas Alva
Mentioned: Howell, John White; Holzer, William
Date: 1882-01-20
Type: Letter
Subject: Testing and quality control; Incandescent lamp
Folder ID: D8230-F
Microfilm ID: 61:731
Document ID: D8230L
URL: https://edisondigital.rutgers.edu/document/D8230L
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 61

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