BE641118A - - Google Patents
Info
- Publication number
- BE641118A BE641118A BE641118DA BE641118A BE 641118 A BE641118 A BE 641118A BE 641118D A BE641118D A BE 641118DA BE 641118 A BE641118 A BE 641118A
- Authority
- BE
- Belgium
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
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB504663A GB969160A (en) | 1963-02-07 | 1963-02-07 | Improvements in or relating to electro-acoustic transducers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE641118A true BE641118A (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html) |
Family
ID=9788729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE641118D BE641118A (c_deeref_Disk_and_Scratch_Disk_Pools_and_Their_Defaults.html) | 1963-02-07 |
Country Status (5)
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4708600A (en) * | 1986-02-24 | 1987-11-24 | Abujudom Ii David N | Piezoelectric fluid pumping apparatus |
-
0
- BE BE641118D patent/BE641118A/xx unknown
-
1963
- 1963-02-07 GB GB504663A patent/GB969160A/en not_active Expired
- 1963-12-10 CH CH1507463A patent/CH396100A/fr unknown
- 1963-12-10 AT AT989063A patent/AT240446B/de active
- 1963-12-11 DK DK576363A patent/DK109094C/da active
Also Published As
| Publication number | Publication date |
|---|---|
| GB969160A (en) | 1964-09-09 |
| DK109094C (da) | 1968-03-18 |
| CH396100A (fr) | 1965-07-31 |
| AT240446B (de) | 1965-05-25 |