Inside Out Library
[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 897
![An illustration from [Graphophone patents], 1878, leaf 897](https://img.insideoutlibrary.com/img/1024/ia-graphophonepaten07unit-897-577.webp)
Attorneys -hi worpis m re^s co„ wAsHtscroN. o- c No. 852,615. PATENTED MAY 7, 1907H. 0. PUTT.SOUND WAVE INTENSIFIED APPLICATION FILED 001.3, 1906. 2 SHEETS-SHEET 2. … J2l , 39 3 & #0Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
More pictures from [Graphophone patents]
More like this
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten20unit-577-257.webp)
