United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 310
§>^ ,. -^c^^ attc ^T The NORRiS peters CO., PHOTO-LlTHO.. WASHINGTON, I (No Model.) No. 499,879, 7 Sheets—Sheet 5. T. A. EDISON. PHONOGEAPH. Patented June 20, 1893. … wocvUoz >n-
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents], 1878, leaf 310](https://img.insideoutlibrary.com/img/1024/ia-graphophonepaten02unit-310-141.webp)
