FR2085287B1 - - Google Patents
Info
- Publication number
- FR2085287B1 FR2085287B1 FR7012431A FR7012431A FR2085287B1 FR 2085287 B1 FR2085287 B1 FR 2085287B1 FR 7012431 A FR7012431 A FR 7012431A FR 7012431 A FR7012431 A FR 7012431A FR 2085287 B1 FR2085287 B1 FR 2085287B1
- 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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7012431A FR2085287B1 (en) | 1970-01-23 | 1970-04-06 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7002431A FR2029455B1 (en) | 1969-01-27 | 1970-01-23 | |
FR7012431A FR2085287B1 (en) | 1970-01-23 | 1970-04-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2085287A1 FR2085287A1 (en) | 1971-12-24 |
FR2085287B1 true FR2085287B1 (en) | 1977-01-21 |
Family
ID=26215511
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7012431A Expired FR2085287B1 (en) | 1970-01-23 | 1970-04-06 |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2085287B1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3983337A (en) * | 1973-06-21 | 1976-09-28 | Babbco, Ltd. | Broad-band acoustic speaker |
AU2342177A (en) * | 1976-03-22 | 1978-09-21 | Babbco Ltd | Loudspeaker. ribbed cone and bearing supported voice coil |
-
1970
- 1970-04-06 FR FR7012431A patent/FR2085287B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2085287A1 (en) | 1971-12-24 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |