NL6900622A - - Google Patents
Info
- Publication number
- NL6900622A NL6900622A NL6900622A NL6900622A NL6900622A NL 6900622 A NL6900622 A NL 6900622A NL 6900622 A NL6900622 A NL 6900622A NL 6900622 A NL6900622 A NL 6900622A NL 6900622 A NL6900622 A NL 6900622A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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 (2)
| Publication Number | Publication Date |
|---|---|
| NL6900622A true NL6900622A (https=) | 1970-02-02 |
| NL150656B NL150656B (nl) | 1976-08-16 |
Family
ID=25008744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6900622A NL150656B (nl) | 1968-07-29 | 1969-01-15 | Elektro-akoestische omzetter. |
Country Status (6)
| Country | Link |
|---|---|
| CH (1) | CH501349A (https=) |
| DE (1) | DE1916719C3 (https=) |
| DK (1) | DK136749B (https=) |
| FR (1) | FR1597238A (https=) |
| GB (1) | GB1234218A (https=) |
| NL (1) | NL150656B (https=) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2531299B1 (fr) * | 1982-08-02 | 1986-07-18 | Depaepe Sa Henri | Transducteur acousto-electrique, notamment pour microphone piezoelectrique |
| WO2010082925A1 (en) * | 2009-01-14 | 2010-07-22 | Hewlett-Packard Development Company, L.P. | Acoustic pressure transducer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE637492A (https=) * | 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
Also Published As
| Publication number | Publication date |
|---|---|
| NL150656B (nl) | 1976-08-16 |
| GB1234218A (https=) | 1971-06-03 |
| DK136749C (https=) | 1978-04-24 |
| DE1916719C3 (de) | 1971-04-15 |
| CH501349A (de) | 1970-12-31 |
| DE1916719A1 (de) | 1970-03-05 |
| DE1916719B2 (de) | 1970-09-10 |
| FR1597238A (https=) | 1970-06-22 |
| DK136749B (da) | 1977-11-14 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NL80 | Abbreviated name of patent owner mentioned of already nullified patent |
Owner name: INDUSTRIAL |
|
| V4 | Lapsed because of reaching the maxim lifetime of a patent |