NL251440A - - Google Patents
Info
- Publication number
- NL251440A NL251440A NL251440DA NL251440A NL 251440 A NL251440 A NL 251440A NL 251440D A NL251440D A NL 251440DA NL 251440 A NL251440 A NL 251440A
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL3129298X | 1960-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL251440A true NL251440A (en) |
Family
ID=19877136
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL112264D NL112264C (en) | 1960-05-10 | ||
| NL251440D NL251440A (en) | 1960-05-10 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL112264D NL112264C (en) | 1960-05-10 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3129298A (en) |
| DE (1) | DE1180416B (en) |
| NL (2) | NL251440A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3783311A (en) * | 1970-12-19 | 1974-01-01 | Coral Audio Corp | Magnetic device for use in acoustic apparatus |
| JPH09238395A (en) * | 1996-02-29 | 1997-09-09 | Sony Corp | Speaker equipment |
| GB0223654D0 (en) * | 2002-10-10 | 2002-11-20 | New Transducers Ltd | Electromagnetic actuator |
| US20040105568A1 (en) * | 2002-12-03 | 2004-06-03 | Po-Hsiung Lee | Speaker with enhanced magnetic flux |
| KR100547357B1 (en) * | 2004-03-30 | 2006-01-26 | 삼성전기주식회사 | Speaker for mobile terminal and manufacturing method thereof |
| US8340336B1 (en) * | 2006-01-25 | 2012-12-25 | At&T Mobility Ii Llc | Magnetic coupling enhanced speaker assembly |
| US8649550B2 (en) * | 2011-01-06 | 2014-02-11 | Aac Acoustic Technologies (Shenzhen) Co., Ltd. | Multi-magnet system and speaker using same |
| EP2521375B1 (en) * | 2011-05-03 | 2014-04-16 | Knowles Electronics Asia PTE. Ltd. | Loudspeaker with port comprising a particle filter |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1986656A (en) * | 1932-10-20 | 1935-01-01 | Bell Telephone Labor Inc | Sealed joint and method of making same |
| US2085721A (en) * | 1932-10-29 | 1937-06-29 | Rca Corp | Sound translating device |
| US2186576A (en) * | 1936-04-17 | 1940-01-09 | Cinaudagraph Corp | Reproducer |
| US2256689A (en) * | 1939-06-17 | 1941-09-23 | Quam Nichols Company | Air gap shield for loud-speakers |
| US2498825A (en) * | 1943-09-15 | 1950-02-28 | Hartford Nat Bank & Trust Comp | Moving coil transducer and enclosure |
| FR920048A (en) * | 1946-01-15 | 1947-03-25 | Space-saving loudspeaker | |
| US2566604A (en) * | 1948-03-16 | 1951-09-04 | William C Eaves | Electrodynamic loud-speaker assembly |
| AT168820B (en) * | 1950-02-04 | 1951-08-25 | Boris Dipl Ing Koleff | Electroacoustic converter |
| USRE26030E (en) * | 1956-02-28 | 1966-05-24 | Dynamic transducer |
-
0
- NL NL112264D patent/NL112264C/xx active
- NL NL251440D patent/NL251440A/xx unknown
-
1961
- 1961-05-08 US US108346A patent/US3129298A/en not_active Expired - Lifetime
- 1961-05-08 DE DEN20010A patent/DE1180416B/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1180416B (en) | 1964-10-29 |
| NL112264C (en) | |
| US3129298A (en) | 1964-04-14 |