United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 651
nt— 1. In the art of deep-sea sounding, themethod of determining the depth of the wa-ter by utilizing the return of an impulse dueto the disturbance of the water in proximityto its surface. 2. In the art of deep-sea sounding, themethod of determining the depth of water 705by means of an echo and…
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents], 1878, leaf 651](https://img.insideoutlibrary.com/img/1024/ia-graphophonepaten07unit-651-413.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten15unit-355-211.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten10unit-657-456.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten10unit-553-371.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten02unit-64-27.webp)
