FR557702A - Caisses de résonance humanophones - Google Patents
Caisses de résonance humanophonesInfo
- Publication number
- FR557702A FR557702A FR557702DA FR557702A FR 557702 A FR557702 A FR 557702A FR 557702D A FR557702D A FR 557702DA FR 557702 A FR557702 A FR 557702A
- Authority
- FR
- France
- Prior art keywords
- human
- sound boxes
- speaking sound
- speaking
- boxes
- 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.)
- Expired
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR557702T | 1922-10-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR557702A true FR557702A (fr) | 1923-08-14 |
Family
ID=8941055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR557702D Expired FR557702A (fr) | 1922-10-23 | 1922-10-23 | Caisses de résonance humanophones |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR557702A (fr) |
-
1922
- 1922-10-23 FR FR557702D patent/FR557702A/fr not_active Expired
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