BE530328A - - Google Patents
Info
- Publication number
- BE530328A BE530328A BE530328DA BE530328A BE 530328 A BE530328 A BE 530328A BE 530328D A BE530328D A BE 530328DA BE 530328 A BE530328 A BE 530328A
- 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 |
|---|---|---|---|
| US1114869XA | 1953-07-22 | 1953-07-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE530328A true BE530328A (https=) |
Family
ID=22338820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE530328D BE530328A (https=) | 1953-07-22 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE530328A (https=) |
| FR (1) | FR1114869A (https=) |
-
0
- BE BE530328D patent/BE530328A/xx unknown
-
1954
- 1954-07-21 FR FR1114869D patent/FR1114869A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1114869A (fr) | 1956-04-17 |