DK140578C - - Google Patents
Info
- Publication number
- DK140578C DK140578C DK554172A DK554172A DK140578C DK 140578 C DK140578 C DK 140578C DK 554172 A DK554172 A DK 554172A DK 554172 A DK554172 A DK 554172A DK 140578 C DK140578 C DK 140578C
- Authority
- DK
- Denmark
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
-
- 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
- H04R19/01—Electrostatic transducers characterised by the use of electrets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2207/00—Details of diaphragms or cones for electromechanical transducers or their suspension covered by H04R7/00 but not provided for in H04R7/00 or in H04R2307/00
- H04R2207/021—Diaphragm extensions, not necessarily integrally formed, e.g. skirts, rims, flanges
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US19667771A | 1971-11-08 | 1971-11-08 | |
| US19659271A | 1971-11-08 | 1971-11-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK140578B DK140578B (da) | 1979-10-01 |
| DK140578C true DK140578C (xx) | 1980-02-18 |
Family
ID=26892043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK554172AA DK140578B (da) | 1971-11-08 | 1972-11-08 | Elektretomsætter og fremgangsmåde til fremstilling heraf. |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5148067B2 (xx) |
| CH (1) | CH556628A (xx) |
| DK (1) | DK140578B (xx) |
| FR (1) | FR2159372B1 (xx) |
| GB (1) | GB1398171A (xx) |
| NL (1) | NL166835C (xx) |
| SE (1) | SE378500B (xx) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57188105A (en) * | 1981-05-14 | 1982-11-19 | Toshiba Corp | Electret constituent |
-
1972
- 1972-09-12 SE SE1173072A patent/SE378500B/xx unknown
- 1972-10-04 CH CH1445572A patent/CH556628A/xx not_active IP Right Cessation
- 1972-10-16 GB GB4755972A patent/GB1398171A/en not_active Expired
- 1972-10-24 NL NL7214357A patent/NL166835C/xx not_active IP Right Cessation
- 1972-11-08 JP JP11198672A patent/JPS5148067B2/ja not_active Expired
- 1972-11-08 DK DK554172AA patent/DK140578B/da unknown
- 1972-11-08 FR FR7239548A patent/FR2159372B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2254692A1 (de) | 1973-05-10 |
| GB1398171A (en) | 1975-06-18 |
| NL166835C (nl) | 1981-09-15 |
| CH556628A (de) | 1974-11-29 |
| DE2254692B2 (de) | 1976-08-05 |
| FR2159372A1 (xx) | 1973-06-22 |
| NL166835B (nl) | 1981-04-15 |
| JPS5148067B2 (xx) | 1976-12-18 |
| JPS4859824A (xx) | 1973-08-22 |
| SE378500B (xx) | 1975-09-01 |
| NL7214357A (xx) | 1973-05-10 |
| FR2159372B1 (xx) | 1977-08-26 |
| DK140578B (da) | 1979-10-01 |