BE385962A - - Google Patents
Info
- Publication number
- BE385962A BE385962A BE385962DA BE385962A BE 385962 A BE385962 A BE 385962A BE 385962D A BE385962D A BE 385962DA BE 385962 A BE385962 A BE 385962A
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/10—Telephone receivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US164583XA | 1931-01-31 | 1931-01-31 | |
| US20531XA | 1931-05-02 | 1931-05-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE385962A true BE385962A (en:Method) |
Family
ID=26669855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE385962D BE385962A (en:Method) | 1931-01-31 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE385962A (en:Method) |
| CH (1) | CH164583A (en:Method) |
| DE (1) | DE624204C (en:Method) |
| FR (1) | FR730676A (en:Method) |
| NL (1) | NL36742C (en:Method) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1073545B (de) * | 1953-06-02 | 1960-01-21 | Akustische u Kino Gerate Ges mbH, Wien | Dynamisches Rieht mikrophon |
| DE971704C (de) * | 1953-06-25 | 1959-03-19 | Carl Ludwig Lehner | Elektroakustischer Wandler fuer telefonische Zwecke |
| DE946819C (de) * | 1954-08-14 | 1956-08-09 | Siemens Ag | Magnetsystem fuer Lautsprecher |
| DE1115766B (de) * | 1956-06-09 | 1961-10-26 | Schoeps Dr Ing Karl | Schallempfaenger |
-
0
- BE BE385962D patent/BE385962A/xx unknown
- NL NL36742D patent/NL36742C/xx active
-
1932
- 1932-01-17 DE DEE42318D patent/DE624204C/de not_active Expired
- 1932-01-29 CH CH164583D patent/CH164583A/fr unknown
- 1932-01-29 FR FR730676D patent/FR730676A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR730676A (fr) | 1932-08-19 |
| CH164583A (fr) | 1933-10-15 |
| DE624204C (de) | 1936-01-15 |
| NL36742C (en:Method) |