FR2246150B3 - - Google Patents
Info
- Publication number
- FR2246150B3 FR2246150B3 FR7431002A FR7431002A FR2246150B3 FR 2246150 B3 FR2246150 B3 FR 2246150B3 FR 7431002 A FR7431002 A FR 7431002A FR 7431002 A FR7431002 A FR 7431002A FR 2246150 B3 FR2246150 B3 FR 2246150B3
- Authority
- FR
- France
- 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
- H04R19/00—Electrostatic transducers
- H04R19/02—Loudspeakers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4340373 | 1973-09-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2246150A1 FR2246150A1 (en) | 1975-04-25 |
| FR2246150B3 true FR2246150B3 (fr) | 1977-07-01 |
Family
ID=10428614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7431002A Granted FR2246150A1 (en) | 1973-09-15 | 1974-09-13 | Electrostatic transducer - has increased power handling capability without loss of acoustic properties |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5089017A (fr) |
| BE (1) | BE819975A (fr) |
| DE (1) | DE2444023A1 (fr) |
| DK (1) | DK484774A (fr) |
| FR (1) | FR2246150A1 (fr) |
| IT (1) | IT1021359B (fr) |
| NL (1) | NL7412195A (fr) |
| SE (1) | SE7411457L (fr) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4429190A (en) * | 1981-11-20 | 1984-01-31 | Bell Telephone Laboratories, Incorporated | Continuous strip electret transducer array |
| US4429191A (en) * | 1981-11-20 | 1984-01-31 | Bell Telephone Laboratories, Incorporated | Electret transducer with variably charged electret foil |
| US4429189A (en) * | 1981-11-20 | 1984-01-31 | Bell Telephone Laboratories, Incorporated | Electret transducer with a selectively metalized backplate |
| DE3232772C1 (de) * | 1982-09-03 | 1983-12-22 | Rolf Dr.-Ing. 6056 Heusenstamm Zahn | Elektrostatischer Wandler nach dem Elektretprinzip |
| FI116873B (fi) | 1996-02-26 | 2006-03-15 | Panphonics Oy | Akustinen elementti ja menetelmä äänen käsittelemiseksi |
| US6271620B1 (en) * | 1999-05-20 | 2001-08-07 | Sen Corporation | Acoustic transducer and method of making the same |
| JP5973293B2 (ja) * | 2012-09-03 | 2016-08-23 | 株式会社Ｎｂｃメッシュテック | 静電型スピーカ |
-
1974
- 1974-09-11 SE SE7411457A patent/SE7411457L/ not_active Application Discontinuation
- 1974-09-13 NL NL7412195A patent/NL7412195A/xx unknown
- 1974-09-13 FR FR7431002A patent/FR2246150A1/fr active Granted
- 1974-09-13 IT IT2726774A patent/IT1021359B/it active
- 1974-09-14 DE DE19742444023 patent/DE2444023A1/de active Pending
- 1974-09-14 JP JP10662374A patent/JPS5089017A/ja active Pending
- 1974-09-16 BE BE148583A patent/BE819975A/fr unknown
- 1974-09-16 DK DK484774A patent/DK484774A/da not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| BE819975A (fr) | 1975-01-16 |
| NL7412195A (nl) | 1975-03-18 |
| FR2246150A1 (en) | 1975-04-25 |
| IT1021359B (it) | 1978-01-30 |
| SE7411457L (fr) | 1975-03-17 |
| JPS5089017A (fr) | 1975-07-17 |
| DK484774A (fr) | 1975-05-12 |
| DE2444023A1 (de) | 1975-03-20 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |