SE378500B - - Google Patents
Info
- Publication number
- SE378500B SE378500B SE1173072A SE1173072A SE378500B SE 378500 B SE378500 B SE 378500B SE 1173072 A SE1173072 A SE 1173072A SE 1173072 A SE1173072 A SE 1173072A SE 378500 B SE378500 B SE 378500B
- Authority
- SE
- Sweden
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
- H04R19/00—Electrostatic transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R19/00—Electrostatic transducers
- H04R19/01—Electrostatic transducers characterised by the use of electrets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2207/00—Details of diaphragms or cones for electromechanical transducers or their suspension covered by H04R7/00 but not provided for in H04R7/00 or in H04R2307/00
- H04R2207/021—Diaphragm extensions, not necessarily integrally formed, e.g. skirts, rims, flanges
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US19659271A | 1971-11-08 | 1971-11-08 | |
| US19667771A | 1971-11-08 | 1971-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE378500B true SE378500B (en) | 1975-09-01 |
Family
ID=26892043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE1173072A SE378500B (en) | 1971-11-08 | 1972-09-12 |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5148067B2 (en) |
| CH (1) | CH556628A (en) |
| DK (1) | DK140578B (en) |
| FR (1) | FR2159372B1 (en) |
| GB (1) | GB1398171A (en) |
| NL (1) | NL166835C (en) |
| SE (1) | SE378500B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57188105A (en) * | 1981-05-14 | 1982-11-19 | Toshiba Corp | Electret constituent |
-
1972
- 1972-09-12 SE SE1173072A patent/SE378500B/xx unknown
- 1972-10-04 CH CH1445572A patent/CH556628A/en not_active IP Right Cessation
- 1972-10-16 GB GB4755972A patent/GB1398171A/en not_active Expired
- 1972-10-24 NL NL7214357A patent/NL166835C/en not_active IP Right Cessation
- 1972-11-08 JP JP11198672A patent/JPS5148067B2/ja not_active Expired
- 1972-11-08 DK DK554172AA patent/DK140578B/en unknown
- 1972-11-08 FR FR7239548A patent/FR2159372B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL7214357A (en) | 1973-05-10 |
| DE2254692B2 (en) | 1976-08-05 |
| FR2159372B1 (en) | 1977-08-26 |
| JPS4859824A (en) | 1973-08-22 |
| JPS5148067B2 (en) | 1976-12-18 |
| DK140578B (en) | 1979-10-01 |
| DE2254692A1 (en) | 1973-05-10 |
| CH556628A (en) | 1974-11-29 |
| DK140578C (en) | 1980-02-18 |
| GB1398171A (en) | 1975-06-18 |
| NL166835C (en) | 1981-09-15 |
| FR2159372A1 (en) | 1973-06-22 |
| NL166835B (en) | 1981-04-15 |