Inside Out Library
[Graphophone patents] (1878)
United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 449
![An illustration from [Graphophone patents], 1878, leaf 449](https://img.insideoutlibrary.com/img/1024/ia-graphophonepaten07unit-449-302.webp)
ConraclJCzZge^de^. ^3zj -A^^^ -r /fu^^&L^ Jgfafr THE NORRIS PETERS CO., WASHINGTON. D. C. No. 831,344. PATENTED SEPT. 18, 1906,C. HILGENBERG.GRAMOPHONE. APPLICATION FILED DEC. 1, 1805. 2 SHEETS-SHEET 2. … ZlSc&Tze^&esPhonograph · 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-graphophonepaten02unit-698-301.webp)
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-141-83.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten15unit-683-372.webp)
