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

https://edisondigital.rutgers.edu/document/NS7802H

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Title

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

Editor's Notes

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

Date

1878-06-23

Folder/Volume ID

NS7802-F

Microfilm ID

7:765

Document ID

NS7802H

Publisher

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