FR1597238A - - Google Patents
Info
- Publication number
- FR1597238A FR1597238A FR1597238DA FR1597238A FR 1597238 A FR1597238 A FR 1597238A FR 1597238D A FR1597238D A FR 1597238DA FR 1597238 A FR1597238 A FR 1597238A
- 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
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/02—Microphones
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US74827268A | 1968-07-29 | 1968-07-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1597238A true FR1597238A (de) | 1970-06-22 |
Family
ID=25008744
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1597238D Expired FR1597238A (de) | 1968-07-29 | 1968-12-27 |
Country Status (6)
Country | Link |
---|---|
CH (1) | CH501349A (de) |
DE (1) | DE1916719C3 (de) |
DK (1) | DK136749B (de) |
FR (1) | FR1597238A (de) |
GB (1) | GB1234218A (de) |
NL (1) | NL150656B (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2531299A1 (fr) * | 1982-08-02 | 1984-02-03 | Depaepe Sa Henri | Transducteur acousto-electrique, notamment pour microphone piezoelectrique |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2380361B1 (de) * | 2009-01-14 | 2019-03-20 | Hewlett-Packard Development Company, L.P. | Akustischer druckwandler |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE637492A (de) * | 1962-11-28 |
-
1968
- 1968-11-28 GB GB1234218D patent/GB1234218A/en not_active Expired
- 1968-12-27 FR FR1597238D patent/FR1597238A/fr not_active Expired
-
1969
- 1969-01-15 NL NL6900622A patent/NL150656B/xx not_active IP Right Cessation
- 1969-04-01 DE DE19691916719 patent/DE1916719C3/de not_active Expired
- 1969-06-26 CH CH979769A patent/CH501349A/de not_active IP Right Cessation
- 1969-07-28 DK DK407369AA patent/DK136749B/da not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2531299A1 (fr) * | 1982-08-02 | 1984-02-03 | Depaepe Sa Henri | Transducteur acousto-electrique, notamment pour microphone piezoelectrique |
Also Published As
Publication number | Publication date |
---|---|
DE1916719C3 (de) | 1971-04-15 |
DK136749B (da) | 1977-11-14 |
NL150656B (nl) | 1976-08-16 |
DK136749C (de) | 1978-04-24 |
DE1916719A1 (de) | 1970-03-05 |
NL6900622A (de) | 1970-02-02 |
GB1234218A (de) | 1971-06-03 |
CH501349A (de) | 1970-12-31 |
DE1916719B2 (de) | 1970-09-10 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |