[D7838ZAY], Letter from F W O'Brien to Thomas Alva Edison, April 9th, 1878
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Title
[D7838ZAY], Letter from F W O'Brien to Thomas Alva Edison, April 9th, 1878
Editor's Notes
Inquires whether a telephonic repeater is practicable and could be arranged with a single diaphragm between two permanent magnets each in a separate circuit TAE marg: It would work but it would be very eak and you could do better direct
Author
Recipient
Date
1878-04-09
Type
Subject
Folder/Volume ID
D7838-F
Microfilm ID
19:683
Document ID
D7838ZAY
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University