BE435784A - - Google Patents
Info
- Publication number
- BE435784A BE435784A BE435784DA BE435784A BE 435784 A BE435784 A BE 435784A BE 435784D A BE435784D A BE 435784DA BE 435784 A BE435784 A BE 435784A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/14—Arrangements providing for calling or supervisory signals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE211740X | 1938-08-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE435784A true BE435784A (en:Method) |
Family
ID=5804333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE435784D BE435784A (en:Method) | 1938-08-04 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2306121A (en:Method) |
| BE (1) | BE435784A (en:Method) |
| CH (1) | CH211740A (en:Method) |
| FR (1) | FR858563A (en:Method) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR959321A (en:Method) * | 1941-01-31 | 1950-03-29 | ||
| FR960967A (en:Method) * | 1945-02-06 | 1950-04-28 | ||
| US2600248A (en) * | 1949-04-28 | 1952-06-10 | Rca Corp | Transmitter keyer |
| US2766324A (en) * | 1951-12-18 | 1956-10-09 | Motorola Inc | Switching system |
| BE523372A (en:Method) * | 1952-10-08 | |||
| US2910543A (en) * | 1955-06-15 | 1959-10-27 | Gen Telephone Lab Inc | Paystation party line lockout systems |
-
0
- BE BE435784D patent/BE435784A/xx unknown
-
1939
- 1939-07-29 US US287204A patent/US2306121A/en not_active Expired - Lifetime
- 1939-07-31 CH CH211740D patent/CH211740A/de unknown
- 1939-08-01 FR FR858563D patent/FR858563A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2306121A (en) | 1942-12-22 |
| FR858563A (fr) | 1940-11-28 |
| CH211740A (de) | 1940-10-15 |