BE332450A - - Google Patents
Info
- Publication number
- BE332450A BE332450A BE332450DA BE332450A BE 332450 A BE332450 A BE 332450A BE 332450D A BE332450D A BE 332450DA BE 332450 A BE332450 A BE 332450A
- Authority
- BE
- Belgium
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
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR249062X | 1925-03-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE332450A true BE332450A (en:Method) |
Family
ID=8883909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE332450D BE332450A (en:Method) | 1925-03-12 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE332450A (en:Method) |
| DE (1) | DE441058C (en:Method) |
| GB (1) | GB249062A (en:Method) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3032138A (en) * | 1957-11-25 | 1962-05-01 | Hawley Products Co | Acoustical devices |
| JP6364900B2 (ja) * | 2013-09-12 | 2018-08-01 | 株式会社リコー | エネルギー変換装置及びスピーカー構造 |
-
0
- BE BE332450D patent/BE332450A/xx unknown
-
1925
- 1925-05-08 GB GB12042/25A patent/GB249062A/en not_active Expired
- 1925-05-09 DE DEH101824D patent/DE441058C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB249062A (en) | 1926-04-15 |
| DE441058C (de) | 1927-02-25 |