when talking at the mouth- BY M. BOUDET, OJ" PARIS. This table, instead of being in a single piece, is composed piece, the vibrations are transmitted almost instantaneously, This microphone, with multiple contacts, as shown in the of a certain number of narrow cast iron plates held in a as in the… … hand. Motion is communicated to the movable plates by a BOuTJET'S MICROPHONE. which i3 simple and effective. A spring socket attached to small lever which hangs under the table, and which rests on the implement is arranged to receive the end of the handle, a small vertical iron plate affixed to a…
Obelisk · Patents · Color · Tobacco · Iron · Patented · Scientific American · Mass · Wood working · Steam pump · Tobacco holder · Rectal temperature · Cast Iron · Wooden tobacco · Sea cat · Trade catalogs · Specific gravity
Internet Archive · Public domain (published before 1931). Free to use for anything.
