BE417278A - - Google Patents
Info
- Publication number
- BE417278A BE417278A BE417278DA BE417278A BE 417278 A BE417278 A BE 417278A BE 417278D A BE417278D A BE 417278DA BE 417278 A BE417278 A BE 417278A
- 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 |
|---|---|---|---|
| FR810205T | 1936-09-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE417278A true BE417278A (en:Method) |
Family
ID=9254776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE417278D BE417278A (en:Method) | 1936-09-01 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE417278A (en:Method) |
| FR (1) | FR810205A (en:Method) |
-
0
- BE BE417278D patent/BE417278A/xx unknown
-
1936
- 1936-09-01 FR FR810205D patent/FR810205A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR810205A (fr) | 1937-03-18 |