BE494659A - - Google Patents
Info
- Publication number
- BE494659A BE494659A BE494659DA BE494659A BE 494659 A BE494659 A BE 494659A BE 494659D A BE494659D A BE 494659DA BE 494659 A BE494659 A BE 494659A
- Authority
- BE
- Belgium
- Prior art keywords
- vehicle
- overtaken
- oscillating circuit
- transmission device
- high frequency
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B1/00—Systems for signalling characterised solely by the form of transmission of the signal
- G08B1/08—Systems for signalling characterised solely by the form of transmission of the signal using electric transmission ; transformation of alarm signals to electrical signals from a different medium, e.g. transmission of an electric alarm signal upon detection of an audible alarm signal
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Traffic Control Systems (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE494659A true BE494659A (enrdf_load_stackoverflow) |
Family
ID=138356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE494659D BE494659A (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE494659A (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2963693A (en) * | 1956-05-08 | 1960-12-06 | Tele F Lux Soc A R L | Device for detecting and repeating selectively sound signals emitted by overtaking vehicles |
-
0
- BE BE494659D patent/BE494659A/fr unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2963693A (en) * | 1956-05-08 | 1960-12-06 | Tele F Lux Soc A R L | Device for detecting and repeating selectively sound signals emitted by overtaking vehicles |
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