[SM044065a], Clipping, Engineer, July 1879
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Title
[SM044065a], Clipping, Engineer, July 1879
Bibliographic Citation
Engineer, July 1879
Editor's Notes
Patent #4590. Duplex and quadruplex telegraphy. J. Muirhead. Description.
Author
Date
1879-07-00
Type
Folder/Volume ID
SM044-F
Microfilm ID
26:136
Document ID
SM044065a
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University