BE527551A - - Google Patents
Info
- Publication number
- BE527551A BE527551A BE527551DA BE527551A BE 527551 A BE527551 A BE 527551A BE 527551D A BE527551D A BE 527551DA BE 527551 A BE527551 A BE 527551A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1079888T | 1953-03-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE527551A true BE527551A (en:Method) |
Family
ID=9609384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE527551D BE527551A (en:Method) | 1953-03-25 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE527551A (en:Method) |
| FR (1) | FR1079888A (en:Method) |
-
0
- BE BE527551D patent/BE527551A/xx unknown
-
1953
- 1953-03-25 FR FR1079888D patent/FR1079888A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1079888A (fr) | 1954-12-03 |