FR647077A - Appareil de signalisation - Google Patents
Appareil de signalisationInfo
- Publication number
- FR647077A FR647077A FR647077DA FR647077A FR 647077 A FR647077 A FR 647077A FR 647077D A FR647077D A FR 647077DA FR 647077 A FR647077 A FR 647077A
- Authority
- FR
- France
- Prior art keywords
- signaling device
- signaling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR647077T | 1927-05-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR647077A true FR647077A (fr) | 1928-11-20 |
Family
ID=9001834
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR647077D Expired FR647077A (fr) | 1927-05-20 | 1927-05-20 | Appareil de signalisation |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR647077A (fr) |
-
1927
- 1927-05-20 FR FR647077D patent/FR647077A/fr not_active Expired
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