BE442514A - - Google Patents
Info
- Publication number
- BE442514A BE442514A BE442514DA BE442514A BE 442514 A BE442514 A BE 442514A BE 442514D A BE442514D A BE 442514DA BE 442514 A BE442514 A BE 442514A
- 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
- H04R5/00—Stereophonic arrangements
- H04R5/02—Spatial or constructional arrangements of loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S1/00—Two-channel systems
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Stereophonic Arrangements (AREA)
- Stereophonic System (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL219703X | 1940-08-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE442514A true BE442514A (forum.php) |
Family
ID=19779289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE442514D BE442514A (forum.php) | 1940-08-22 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE442514A (forum.php) |
| CH (1) | CH219703A (forum.php) |
| DE (1) | DE940048C (forum.php) |
| FR (1) | FR874783A (forum.php) |
| GB (1) | GB609037A (forum.php) |
-
0
- BE BE442514D patent/BE442514A/xx unknown
-
1941
- 1941-08-20 DE DEN2498D patent/DE940048C/de not_active Expired
- 1941-08-20 FR FR874783D patent/FR874783A/fr not_active Expired
- 1941-08-20 CH CH219703D patent/CH219703A/de unknown
-
1945
- 1945-11-28 GB GB32152/45A patent/GB609037A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB609037A (en) | 1948-09-24 |
| FR874783A (fr) | 1942-08-26 |
| CH219703A (de) | 1942-02-28 |
| DE940048C (de) | 1956-03-08 |