FR640227A - Perfectionnements aux haut-parleurs - Google Patents
Perfectionnements aux haut-parleursInfo
- Publication number
- FR640227A FR640227A FR640227DA FR640227A FR 640227 A FR640227 A FR 640227A FR 640227D A FR640227D A FR 640227DA FR 640227 A FR640227 A FR 640227A
- Authority
- FR
- France
- Prior art keywords
- enhancements
- loudspeaker
- loudspeaker enhancements
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB21316/26A GB279587A (en) | 1926-08-30 | 1926-08-30 | Improvements in loud speakers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR640227A true FR640227A (fr) | 1928-07-09 |
Family
ID=10160805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR640227D Expired FR640227A (fr) | 1926-08-30 | 1927-08-29 | Perfectionnements aux haut-parleurs |
Country Status (5)
-
0
- NL NL22552D patent/NL22552C/xx active
-
1926
- 1926-08-30 GB GB21316/26A patent/GB279587A/en not_active Expired
-
1927
- 1927-08-26 US US215543A patent/US1716772A/en not_active Expired - Lifetime
- 1927-08-29 FR FR640227D patent/FR640227A/fr not_active Expired
- 1927-08-30 DE DED53775D patent/DE493182C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL22552C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | |
| GB279587A (en) | 1927-11-03 |
| US1716772A (en) | 1929-06-11 |
| DE493182C (de) | 1930-03-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FR698003A (fr) | Perfectionnements aux haut-parleurs | |
| FR695243A (fr) | Perfectionnements aux haut-parleurs | |
| FR616738A (fr) | Haut-parleur | |
| FR32220E (fr) | Haut-parleur | |
| FR36634E (fr) | Perfectionnements aux hauts-parleurs | |
| FR622666A (fr) | Perfectionnements aux haut-parleurs | |
| FR35609E (fr) | Perfectionnements aux haut-parleurs | |
| FR646306A (fr) | Perfectionnements aux haut-parleurs | |
| FR36830E (fr) | Perfectionnements aux hauts-parleurs | |
| FR37341E (fr) | Perfectionnements aux haut-parleurs | |
| FR38139E (fr) | Perfectionnements aux haut-parleurs | |
| FR35519E (fr) | Perfectionnements aux haut-parleurs | |
| BE351188R (fr) | Perfectionnements aux haut-parleurs | |
| BE368564R (fr) | Perfectionnements aux haut-parleurs | |
| FR640227A (fr) | Perfectionnements aux haut-parleurs | |
| BE359759R (fr) | Perfectionnements aux haut-parleurs | |
| BE352900R (fr) | Perfectionnements aux haut-parleurs | |
| FR632153A (fr) | Perfectionnements aux téléphones | |
| FR628689A (fr) | Perfectionnements aux hauts-parleurs | |
| FR36327E (fr) | Perfectionnements aux haut-parleurs | |
| FR679871A (fr) | Perfectionnements aux hauts-parleurs | |
| FR682427A (fr) | Perfectionnements aux haut-parleurs | |
| FR36028E (fr) | Perfectionnements aux hauts-parleurs | |
| FR617464A (fr) | Haut-parleur | |
| FR611038A (fr) | Perfectionnements aux thermo-cautères |