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[N068009], Technical Note, Ludwig K Boehm, April 10th, 1880

Title: [N068009], Technical Note, Ludwig K Boehm, April 10th, 1880
Editor's Notes: "Tube for McLeod gauge made narrow on the single sprengel pump." Also rough sketch of a stylus "for automatique writing telegraph."
Author: Boehm, Ludwig K
Date: 1880-04-10
Type: Technical Note
Subject: Automatic telegraphy; Vacuum and glass bulb
Folder ID: N068-F
Microfilm ID: 34:611
Document ID: N068009
URL: https://edisondigital.rutgers.edu/document/N068009
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 34