United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 917
e, as set forth. 10. In a sound producer for submarine sig-naling, a liquid resonator composed of a cyl- 70inder of hardened steel walls of a thicknesscapable of withstanding the variations inhydrostatic pressure accompanying the har-monic vibrations of a column of water con-tained within the… … IM! 11I 11 11 I M Ill II I l illli1 ih |j||ilifll!llin ^
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents], 1878, leaf 917](https://img.insideoutlibrary.com/img/1024/ia-graphophonepaten07unit-917-589.webp)
