[NS7704ZBL], Technical Note, Charles Batchelor, Thomas Alva Edison, June 12th, 1877

https://edisondigital.rutgers.edu/document/NS7704ZBL

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Title

[NS7704ZBL], Technical Note, Charles Batchelor, Thomas Alva Edison, June 12th, 1877

Editor's Notes

sexty. 2pp.: with tuning fork; "this is the relay that dont open in a reversal" dry paper cond. again; partial 3 level stuff

Date

1877-06-12

Folder/Volume ID

NS7704-F

Microfilm ID

7:640

Document ID

NS7704ZBL

Publisher

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