BE479070A - - Google Patents
Info
- Publication number
- BE479070A BE479070A BE479070DA BE479070A BE 479070 A BE479070 A BE 479070A BE 479070D A BE479070D A BE 479070DA BE 479070 A BE479070 A BE 479070A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR54607T | 1942-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE479070A true BE479070A (en) |
Family
ID=8689048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE479070D BE479070A (en) | 1942-05-30 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE479070A (en) |
| FR (1) | FR54607E (en) |
-
0
- BE BE479070D patent/BE479070A/xx unknown
-
1942
- 1942-05-30 FR FR54607D patent/FR54607E/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR54607E (en) | 1950-07-07 |