FR714352A - Télégraphie ultra-téléphonique - Google Patents
Télégraphie ultra-téléphoniqueInfo
- Publication number
- FR714352A FR714352A FR714352DA FR714352A FR 714352 A FR714352 A FR 714352A FR 714352D A FR714352D A FR 714352DA FR 714352 A FR714352 A FR 714352A
- Authority
- FR
- France
- Prior art keywords
- telegraphy
- ultra
- telephone
- telephone telegraphy
- 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
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
- H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR714352T | 1930-07-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR714352A true FR714352A (fr) | 1931-11-13 |
Family
ID=9086905
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR714352D Expired FR714352A (fr) | 1930-07-19 | 1930-07-19 | Télégraphie ultra-téléphonique |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR714352A (fr) |
-
1930
- 1930-07-19 FR FR714352D patent/FR714352A/fr not_active Expired
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