FR32957E - Loudspeaker acoustic unit intended for wireless telephony hearing - Google Patents
Loudspeaker acoustic unit intended for wireless telephony hearingInfo
- Publication number
- FR32957E FR32957E FR32957DA FR32957E FR 32957 E FR32957 E FR 32957E FR 32957D A FR32957D A FR 32957DA FR 32957 E FR32957 E FR 32957E
- Authority
- FR
- France
- Prior art keywords
- hearing
- wireless telephony
- acoustic unit
- unit intended
- loudspeaker acoustic
- 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
- G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
- G10K11/025—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators horns for impedance matching
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR32957T | 1926-09-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR32957E true FR32957E (en) | 1928-06-06 |
Family
ID=8670626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR32957D Expired FR32957E (en) | 1926-09-02 | 1926-09-02 | Loudspeaker acoustic unit intended for wireless telephony hearing |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR32957E (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2098419A1 (en) * | 1970-07-15 | 1972-03-10 | Palitex Project Co Gmbh |
-
1926
- 1926-09-02 FR FR32957D patent/FR32957E/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2098419A1 (en) * | 1970-07-15 | 1972-03-10 | Palitex Project Co Gmbh |
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