FR2061790A7 - - Google Patents
Info
- Publication number
- FR2061790A7 FR2061790A7 FR7033780A FR7033780A FR2061790A7 FR 2061790 A7 FR2061790 A7 FR 2061790A7 FR 7033780 A FR7033780 A FR 7033780A FR 7033780 A FR7033780 A FR 7033780A FR 2061790 A7 FR2061790 A7 FR 2061790A7
- 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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6914204A NL6914204A (en) | 1969-09-18 | 1969-09-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2061790A7 true FR2061790A7 (en) | 1971-06-25 |
| FR2061790B3 FR2061790B3 (en) | 1973-06-08 |
Family
ID=19807933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR707033780A Expired FR2061790B3 (en) | 1969-09-18 | 1970-09-17 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3685609A (en) |
| JP (1) | JPS511123B1 (en) |
| CH (1) | CH527537A (en) |
| DE (1) | DE2043319B2 (en) |
| FR (1) | FR2061790B3 (en) |
| GB (1) | GB1328538A (en) |
| NL (1) | NL6914204A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1592246A (en) * | 1976-09-23 | 1981-07-01 | Isaac T P | Sound projection system |
| US5198624A (en) * | 1988-02-10 | 1993-03-30 | Linaeum Corporation | Audio transducer with controlled flexibility diaphragm |
| US4903308A (en) * | 1988-02-10 | 1990-02-20 | Linaeum Corporation | Audio transducer with controlled flexibility diaphragm |
| US6061461A (en) * | 1998-05-08 | 2000-05-09 | Paddock; Paul W. | Audio transducer |
| KR101975022B1 (en) * | 2018-03-07 | 2019-05-03 | 한국기계연구원 | Directional Sound Apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1810708A (en) * | 1929-01-09 | 1931-06-16 | Echodon Inc | Method of and apparatus for amplifying and projecting sound waves |
| US2956636A (en) * | 1956-06-11 | 1960-10-18 | Sipko L Boersma | Loudspeaker |
-
1969
- 1969-09-18 NL NL6914204A patent/NL6914204A/xx unknown
-
1970
- 1970-09-01 DE DE19702043319 patent/DE2043319B2/en not_active Withdrawn
- 1970-09-03 US US69269A patent/US3685609A/en not_active Expired - Lifetime
- 1970-09-15 CH CH1369470A patent/CH527537A/en not_active IP Right Cessation
- 1970-09-15 GB GB4401770A patent/GB1328538A/en not_active Expired
- 1970-09-16 JP JP45080870A patent/JPS511123B1/ja active Pending
- 1970-09-17 FR FR707033780A patent/FR2061790B3/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2043319A1 (en) | 1971-04-01 |
| CH527537A (en) | 1972-08-31 |
| GB1328538A (en) | 1973-08-30 |
| JPS511123B1 (en) | 1976-01-14 |
| DE2043319B2 (en) | 1976-01-15 |
| FR2061790B3 (en) | 1973-06-08 |
| US3685609A (en) | 1972-08-22 |
| NL6914204A (en) | 1971-03-22 |