DK139370C - - Google Patents
Info
- Publication number
- DK139370C DK139370C DK245572A DK245572A DK139370C DK 139370 C DK139370 C DK 139370C DK 245572 A DK245572 A DK 245572A DK 245572 A DK245572 A DK 245572A DK 139370 C DK139370 C DK 139370C
- Authority
- DK
- Denmark
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
- H04R11/04—Microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
- H04R11/06—Telephone receivers
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14401971A | 1971-05-17 | 1971-05-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK139370B DK139370B (da) | 1979-02-05 |
| DK139370C true DK139370C (https=) | 1979-07-09 |
Family
ID=22506712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK245572AA DK139370B (da) | 1971-05-17 | 1972-05-17 | Elektroakustisk omsætter. |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3766332A (https=) |
| JP (1) | JPS5224842B1 (https=) |
| CA (1) | CA963570A (https=) |
| DK (1) | DK139370B (https=) |
| FR (1) | FR2138061B1 (https=) |
| GB (1) | GB1366613A (https=) |
| NL (1) | NL164722C (https=) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1004669C2 (nl) * | 1996-12-02 | 1998-06-03 | Microtronic Nederland Bv | Transducer. |
| US6658134B1 (en) | 1999-08-16 | 2003-12-02 | Sonionmicrotronic Nederland B.V. | Shock improvement for an electroacoustic transducer |
| US7164776B2 (en) * | 2000-01-07 | 2007-01-16 | Knowles Electronics, Llc. | Vibration balanced receiver |
| WO2001052594A2 (en) * | 2000-01-07 | 2001-07-19 | Knowles Electronics, Llc | Vibration balanced receiver |
| US7072482B2 (en) | 2002-09-06 | 2006-07-04 | Sonion Nederland B.V. | Microphone with improved sound inlet port |
| US8571227B2 (en) | 2005-11-11 | 2013-10-29 | Phitek Systems Limited | Noise cancellation earphone |
| US8135163B2 (en) * | 2007-08-30 | 2012-03-13 | Klipsch Group, Inc. | Balanced armature with acoustic low pass filter |
| US8666085B2 (en) * | 2007-10-02 | 2014-03-04 | Phitek Systems Limited | Component for noise reducing earphone |
| US20090307730A1 (en) * | 2008-05-29 | 2009-12-10 | Mark Donaldson | Media enhancement module |
| US8385583B2 (en) * | 2008-08-29 | 2013-02-26 | The Penn State Research Foundation | Methods and apparatus for reduced distortion balanced armature devices |
| US20110002474A1 (en) * | 2009-01-29 | 2011-01-06 | Graeme Colin Fuller | Active Noise Reduction System Control |
| EP2226902A3 (en) * | 2009-03-06 | 2013-03-13 | Phitek Systems Limited | In-flight entertainment system connector |
| US20110188668A1 (en) * | 2009-09-23 | 2011-08-04 | Mark Donaldson | Media delivery system |
| US9818394B2 (en) | 2009-11-30 | 2017-11-14 | Graeme Colin Fuller | Realisation of controller transfer function for active noise cancellation |
| WO2011146429A1 (en) | 2010-05-17 | 2011-11-24 | Thales Avionics, Inc. | Airline passenger seat modular user interface device |
| EP2471710A1 (en) | 2010-11-15 | 2012-07-04 | Nigel Greig | Media distribution system |
| US9654854B2 (en) | 2011-06-01 | 2017-05-16 | Paul Darlington | In-ear device incorporating active noise reduction |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB392318A (en) * | 1932-03-05 | 1933-05-18 | Radiophon G M B H | Improvements in loud-speaking telephones or loud-speaker apparatus |
| US2297218A (en) * | 1937-04-24 | 1942-09-29 | Hans E Henrich | Loud-speaker |
| NL106495C (https=) * | 1956-03-06 | |||
| US3002057A (en) * | 1956-03-29 | 1961-09-26 | Vigren Sten Daniel | Polarized electromagnetic device |
| US3111187A (en) * | 1959-11-23 | 1963-11-19 | H J Leak & Company Ltd | Diaphragm for electro acoustic transducer |
| GB1058212A (en) * | 1964-04-24 | 1967-02-08 | Gen Electric Co Ltd | Improvements in or relating to telephone receivers |
| US3617653A (en) * | 1967-05-16 | 1971-11-02 | Tibbetts Industries | Magnetic reed type acoustic transducer with improved armature |
-
1971
- 1971-05-17 US US00144019A patent/US3766332A/en not_active Expired - Lifetime
-
1972
- 1972-01-13 CA CA132,362A patent/CA963570A/en not_active Expired
- 1972-02-09 JP JP47013639A patent/JPS5224842B1/ja active Pending
- 1972-02-14 GB GB676072A patent/GB1366613A/en not_active Expired
- 1972-02-21 NL NL7202226.A patent/NL164722C/xx not_active IP Right Cessation
- 1972-05-17 DK DK245572AA patent/DK139370B/da not_active IP Right Cessation
- 1972-05-17 FR FR7217699A patent/FR2138061B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2138061A1 (https=) | 1972-12-29 |
| DK139370B (da) | 1979-02-05 |
| FR2138061B1 (https=) | 1975-08-01 |
| DE2224148B2 (de) | 1976-12-09 |
| GB1366613A (en) | 1974-09-11 |
| CA963570A (en) | 1975-02-25 |
| DE2224148A1 (de) | 1972-12-07 |
| US3766332A (en) | 1973-10-16 |
| JPS5224842B1 (https=) | 1977-07-04 |
| NL7202226A (https=) | 1972-11-21 |
| NL164722C (nl) | 1981-01-15 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PBP | Patent lapsed |