FR2167867B1 - - Google Patents
Info
- Publication number
- FR2167867B1 FR2167867B1 FR7300679A FR7300679A FR2167867B1 FR 2167867 B1 FR2167867 B1 FR 2167867B1 FR 7300679 A FR7300679 A FR 7300679A FR 7300679 A FR7300679 A FR 7300679A FR 2167867 B1 FR2167867 B1 FR 2167867B1
- 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
- H04R11/00—Transducers of moving-armature or moving-core type
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA132093 | 1972-01-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2167867A1 FR2167867A1 (esLanguage) | 1973-08-24 |
| FR2167867B1 true FR2167867B1 (esLanguage) | 1976-05-14 |
Family
ID=4092018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7300679A Expired FR2167867B1 (esLanguage) | 1972-01-10 | 1973-01-10 |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE7300802U (esLanguage) |
| FR (1) | FR2167867B1 (esLanguage) |
| GB (1) | GB1379372A (esLanguage) |
| SE (1) | SE377025B (esLanguage) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1190993C (zh) | 1997-04-17 | 2005-02-23 | 伯斯有限公司 | 降低有源噪声的头戴送受话器及其中使用的模块 |
| US8571227B2 (en) | 2005-11-11 | 2013-10-29 | Phitek Systems Limited | Noise cancellation earphone |
| JP2009153103A (ja) | 2007-10-02 | 2009-07-09 | Phitek Systems Ltd | ノイズ低減イヤホン用の構成部分 |
| US9818394B2 (en) | 2009-11-30 | 2017-11-14 | Graeme Colin Fuller | Realisation of controller transfer function for active noise cancellation |
| CN102939691B (zh) | 2010-05-17 | 2015-08-05 | 泰雷兹航空电子公司 | 航空线乘客座位模块化用户界面设备 |
| US9487295B2 (en) | 2010-11-15 | 2016-11-08 | William James Sim | Vehicle media distribution system using optical transmitters |
| CN103748903B (zh) | 2011-06-01 | 2017-02-22 | 菲泰克系统有限公司 | 包括有源噪声降低的耳内装置 |
| CN112122088B (zh) * | 2019-06-24 | 2024-06-25 | 苏州嘉辉超声波科技有限公司 | 一种双曲面换能器 |
-
1973
- 1973-01-09 SE SE7300254A patent/SE377025B/xx unknown
- 1973-01-10 GB GB142273A patent/GB1379372A/en not_active Expired
- 1973-01-10 DE DE19737300802 patent/DE7300802U/de not_active Expired
- 1973-01-10 FR FR7300679A patent/FR2167867B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| SE377025B (esLanguage) | 1975-06-16 |
| FR2167867A1 (esLanguage) | 1973-08-24 |
| DE7300802U (de) | 1973-03-29 |
| GB1379372A (en) | 1975-01-02 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CD | Change of name or company name | ||
| ST | Notification of lapse |