Inside Out Library
[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 466
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W. N. DENNISON. COUNTEBBALANOED SOUND BOX. APPLICATION PILED XAB. 12, 1907. Patented July 13, 1909. 927,505. … INVENTOR WITNESSES. ATTORNEY. JU*JM ;j. »»OTC.L-T«-V«"«'»a wtsMJtoroM. a cPhonograph · Patents
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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