BE518374A - - Google Patents
Info
- Publication number
- BE518374A BE518374A BE518374DA BE518374A BE 518374 A BE518374 A BE 518374A BE 518374D A BE518374D A BE 518374DA BE 518374 A BE518374 A BE 518374A
- 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
- H04R9/08—Microphones
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE748136X | 1952-03-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE518374A true BE518374A (en:Method) |
Family
ID=6648814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE518374D BE518374A (en:Method) | 1952-03-13 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE518374A (en:Method) |
| FR (1) | FR1072884A (en:Method) |
| GB (1) | GB748136A (en:Method) |
| NL (1) | NL88106C (en:Method) |
-
0
- NL NL88106D patent/NL88106C/xx active
- BE BE518374D patent/BE518374A/xx unknown
-
1953
- 1953-03-10 GB GB6567/53A patent/GB748136A/en not_active Expired
- 1953-03-11 FR FR1072884D patent/FR1072884A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL88106C (en:Method) | |
| GB748136A (en) | 1956-04-25 |
| FR1072884A (fr) | 1954-09-16 |