NL7214357A - - Google Patents
Info
- Publication number
- NL7214357A NL7214357A NL7214357A NL7214357A NL7214357A NL 7214357 A NL7214357 A NL 7214357A NL 7214357 A NL7214357 A NL 7214357A NL 7214357 A NL7214357 A NL 7214357A NL 7214357 A NL7214357 A NL 7214357A
- Authority
- NL
- Netherlands
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 (3)
Publication Number | Publication Date |
---|---|
NL7214357A true NL7214357A (xx) | 1973-05-10 |
NL166835B NL166835B (nl) | 1981-04-15 |
NL166835C NL166835C (nl) | 1981-09-15 |
Family
ID=26892043
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL7214357A NL166835C (nl) | 1971-11-08 | 1972-10-24 | Elektroakoestische omzetter met elektreet, en werkwijze voor de vervaardiging daarvan. |
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 |
DK140578C (xx) | 1980-02-18 |
JPS4859824A (xx) | 1973-08-22 |
SE378500B (xx) | 1975-09-01 |
FR2159372B1 (xx) | 1977-08-26 |
DK140578B (da) | 1979-10-01 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
SNR | Assignments of patents or rights arising from examined patent applications |
Owner name: KNOWLES ELECTRONICS, INC. |
|
V4 | Lapsed because of reaching the maxim lifetime of a patent |