[NS7802H], Technical Note, Thomas Alva Edison, Charles Batchelor, June 23rd, 1878

Item

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Abstract

aurophone rule for making cone (proportions - related to horn designs on previous day)

Date

1878-06-23

Decade

1870-1879

Identifier

NS7802H

Folder Set

NS7802

Title

[NS7802H], Technical Note, Thomas Alva Edison, Charles Batchelor, June 23rd, 1878

Microfilm ID

7:765

Publisher

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University

Timestamp

June 23, 1878