BE398035A - - Google Patents
Info
- Publication number
- BE398035A BE398035A BE398035DA BE398035A BE 398035 A BE398035 A BE 398035A BE 398035D A BE398035D A BE 398035DA BE 398035 A BE398035 A BE 398035A
- 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 |
|---|---|---|---|
| DE759288X | 1932-08-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE398035A true BE398035A (en:Method) |
Family
ID=6660476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE398035D BE398035A (en:Method) | 1932-08-05 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE398035A (en:Method) |
| FR (1) | FR759288A (en:Method) |
-
0
- BE BE398035D patent/BE398035A/xx unknown
-
1933
- 1933-08-04 FR FR759288D patent/FR759288A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR759288A (fr) | 1934-01-31 |