DE183776C - - Google Patents
Info
- Publication number
- DE183776C DE183776C DENDAT183776D DE183776DA DE183776C DE 183776 C DE183776 C DE 183776C DE NDAT183776 D DENDAT183776 D DE NDAT183776D DE 183776D A DE183776D A DE 183776DA DE 183776 C DE183776 C DE 183776C
- Authority
- DE
- Germany
- Prior art keywords
- valve
- air
- chamber
- tones
- air chamber
- 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
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
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/08—Non-electric sound-amplifying devices, e.g. non-electric megaphones
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Fluid-Damping Devices (AREA)
- Vibration Prevention Devices (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE183776C true DE183776C (https=) |
Family
ID=447763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT183776D Active DE183776C (https=) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE183776C (https=) |
-
0
- DE DENDAT183776D patent/DE183776C/de active Active
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