DE225689C - - Google Patents
Info
- Publication number
- DE225689C DE225689C DENDAT225689D DE225689DA DE225689C DE 225689 C DE225689 C DE 225689C DE NDAT225689 D DENDAT225689 D DE NDAT225689D DE 225689D A DE225689D A DE 225689DA DE 225689 C DE225689 C DE 225689C
- Authority
- DE
- Germany
- Prior art keywords
- horn
- housing
- engine
- speaking
- attached
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000000694 effects Effects 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE225689C true DE225689C (https=) |
Family
ID=486302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT225689D Active DE225689C (https=) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE225689C (https=) |
-
0
- DE DENDAT225689D patent/DE225689C/de active Active
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