DE29905324U1 - Flat speaker - Google Patents

Flat speaker

Info

Publication number
DE29905324U1
DE29905324U1 DE29905324U DE29905324U DE29905324U1 DE 29905324 U1 DE29905324 U1 DE 29905324U1 DE 29905324 U DE29905324 U DE 29905324U DE 29905324 U DE29905324 U DE 29905324U DE 29905324 U1 DE29905324 U1 DE 29905324U1
Authority
DE
Germany
Prior art keywords
flat speaker
speaker
flat
Prior art date
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 - Lifetime
Application number
DE29905324U
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to GB9905540A priority Critical patent/GB2347818A/en
Application filed by Individual filed Critical Individual
Priority to DE29905324U priority patent/DE29905324U1/en
Priority to FR9904631A priority patent/FR2792490B3/en
Publication of DE29905324U1 publication Critical patent/DE29905324U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H04R9/06—Loudspeakers
DE29905324U 1999-03-10 1999-03-23 Flat speaker Expired - Lifetime DE29905324U1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB9905540A GB2347818A (en) 1999-03-10 1999-03-10 Flat type loud speaker
DE29905324U DE29905324U1 (en) 1999-03-10 1999-03-23 Flat speaker
FR9904631A FR2792490B3 (en) 1999-03-10 1999-04-14 PLANAR SPEAKER

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9905540A GB2347818A (en) 1999-03-10 1999-03-10 Flat type loud speaker
DE29905324U DE29905324U1 (en) 1999-03-10 1999-03-23 Flat speaker
FR9904631A FR2792490B3 (en) 1999-03-10 1999-04-14 PLANAR SPEAKER

Publications (1)

Publication Number Publication Date
DE29905324U1 true DE29905324U1 (en) 1999-07-29

Family

ID=27220224

Family Applications (1)

Application Number Title Priority Date Filing Date
DE29905324U Expired - Lifetime DE29905324U1 (en) 1999-03-10 1999-03-23 Flat speaker

Country Status (3)

Country Link
DE (1) DE29905324U1 (en)
FR (1) FR2792490B3 (en)
GB (1) GB2347818A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3815740B2 (en) * 2001-07-23 2006-08-30 フォスター電機株式会社 Fully driven flat speaker

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB312756A (en) * 1928-04-13 1929-06-06 Cyril John Nesbitt Dufort Improvements in and relating to electrically operated loud speakers
FR1269138A (en) * 1960-06-23 1961-08-11 Improvements to loudspeakers, microphones, and similar electrodynamic devices
US3674946A (en) * 1970-12-23 1972-07-04 Magnepan Inc Electromagnetic transducer
JPS5525285A (en) * 1978-08-14 1980-02-22 Sony Corp Speaker
US4471173A (en) * 1982-03-01 1984-09-11 Magnepan, Inc. Piston-diaphragm speaker
US4491698A (en) * 1982-06-17 1985-01-01 David A. Larson Electro-acoustic transducer with diaphragm and blank therefor
US4550228A (en) * 1983-02-22 1985-10-29 Apogee Acoustics, Inc. Ribbon speaker system
EP0493450A4 (en) * 1989-09-22 1993-05-12 Antony Leonard Trufitt Planar speakers

Also Published As

Publication number Publication date
GB2347818A (en) 2000-09-13
FR2792490B3 (en) 2001-03-23
GB9905540D0 (en) 1999-05-05
FR2792490A3 (en) 2000-10-20

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Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 19990909

R150 Term of protection extended to 6 years

Effective date: 20020712

R151 Term of protection extended to 8 years

Effective date: 20050407

R158 Lapse of ip right after 8 years

Effective date: 20071002