05/27/1902 Hammer, William Joseph to Edison, Thomas Alva
(Marconi Wireless Telegraph Company of America; Betts, Frederic Henry; Mallory, Walter Seeley; Randolph, John F) Patent interference; Telephone; Wireless and radio [Marginalia by Edison, Thomas Alva]
[D0231]  Document File Series -- 1902: (D-02-31) Radio
[D0231AAM; TAEM 187:982]
Courtesy of Thomas Edison National Historical Park.
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