BE331780A - - Google Patents
Info
- Publication number
- BE331780A BE331780A BE331780DA BE331780A BE 331780 A BE331780 A BE 331780A BE 331780D A BE331780D A BE 331780DA BE 331780 A BE331780 A BE 331780A
- 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
- H04R19/00—Electrostatic transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE248255X | 1925-07-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE331780A true BE331780A (da) |
Family
ID=5935526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE331780D BE331780A (da) | 1925-07-09 |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US1609760A (da) |
| BE (1) | BE331780A (da) |
| FR (1) | FR601399A (da) |
| GB (1) | GB248255A (da) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6393129B1 (en) | 1998-01-07 | 2002-05-21 | American Technology Corporation | Paper structures for speaker transducers |
-
0
- US US17256D patent/USRE17256E/en not_active Expired
- BE BE331780D patent/BE331780A/xx unknown
-
1925
- 1925-07-29 FR FR601399D patent/FR601399A/fr not_active Expired
- 1925-08-03 US US47662A patent/US1609760A/en not_active Expired - Lifetime
- 1925-08-14 GB GB20453/25A patent/GB248255A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR601399A (fr) | 1926-03-01 |
| GB248255A (en) | 1926-03-04 |
| USRE17256E (en) | 1929-04-02 |
| US1609760A (en) | 1926-12-07 |