BE721193A - - Google Patents
Info
- Publication number
- BE721193A BE721193A BE721193A BE721193A BE721193A BE 721193 A BE721193 A BE 721193A BE 721193 A BE721193 A BE 721193A BE 721193 A BE721193 A BE 721193A BE 721193 A BE721193 A BE 721193A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/40—Monitoring; Testing of relay systems
- H04B17/401—Monitoring; Testing of relay systems with selective localization
- H04B17/402—Monitoring; Testing of relay systems with selective localization using different frequencies
- H04B17/404—Monitoring; Testing of relay systems with selective localization using different frequencies selected by local filters
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Dc Digital Transmission (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1549046 | 1967-09-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE721193A true BE721193A (de) | 1969-03-20 |
Family
ID=5676610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE721193A BE721193A (de) | 1967-09-21 | 1968-09-20 |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5018336B1 (de) |
| AT (1) | AT288491B (de) |
| BE (1) | BE721193A (de) |
| CH (1) | CH497090A (de) |
| FR (1) | FR1580031A (de) |
| GB (1) | GB1212907A (de) |
| NL (1) | NL144460B (de) |
| SE (1) | SE353629B (de) |
-
1968
- 1968-09-10 NL NL6812913A patent/NL144460B/xx not_active IP Right Cessation
- 1968-09-19 FR FR1580031D patent/FR1580031A/fr not_active Expired
- 1968-09-19 AT AT915868A patent/AT288491B/de not_active IP Right Cessation
- 1968-09-19 CH CH1405968A patent/CH497090A/de not_active IP Right Cessation
- 1968-09-20 JP JP6791768A patent/JPS5018336B1/ja active Pending
- 1968-09-20 BE BE721193A patent/BE721193A/xx not_active IP Right Cessation
- 1968-09-20 GB GB4475368A patent/GB1212907A/en not_active Expired
- 1968-09-20 SE SE1269968A patent/SE353629B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR1580031A (de) | 1969-08-29 |
| AT288491B (de) | 1971-03-10 |
| CH497090A (de) | 1970-09-30 |
| GB1212907A (en) | 1970-11-18 |
| SE353629B (de) | 1973-02-05 |
| NL144460B (nl) | 1974-12-16 |
| JPS5018336B1 (de) | 1975-06-27 |
| NL6812913A (de) | 1969-03-25 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE20 | Patent expired |
Owner name: SIEMENS A.G. Effective date: 19880920 |