FR409799A - Appareils pour la phototéléphonie - Google Patents
Appareils pour la phototéléphonieInfo
- Publication number
- FR409799A FR409799A FR409799DA FR409799A FR 409799 A FR409799 A FR 409799A FR 409799D A FR409799D A FR 409799DA FR 409799 A FR409799 A FR 409799A
- Authority
- FR
- France
- Prior art keywords
- phototelephony
- devices
- phototelephony devices
- 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
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
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 |
---|---|---|---|
FR409799T | 1909-11-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR409799A true FR409799A (fr) | 1910-04-30 |
Family
ID=1453897
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR409799D Expired FR409799A (fr) | 1909-11-30 | 1909-11-30 | Appareils pour la phototéléphonie |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR409799A (fr) |
-
1909
- 1909-11-30 FR FR409799D patent/FR409799A/fr not_active Expired
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