FR906522A - Communication device - Google Patents
Communication deviceInfo
- Publication number
- FR906522A FR906522A FR906522DA FR906522A FR 906522 A FR906522 A FR 906522A FR 906522D A FR906522D A FR 906522DA FR 906522 A FR906522 A FR 906522A
- Authority
- FR
- France
- Prior art keywords
- communication device
- communication
- 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
- H04B13/00—Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
- H04B13/02—Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR906522T | 1944-02-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR906522A true FR906522A (en) | 1946-01-09 |
Family
ID=9405748
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR906522D Expired FR906522A (en) | 1944-02-28 | 1944-02-28 | Communication device |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR906522A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2621073A1 (en) * | 1987-09-28 | 1989-03-31 | Alsthom | System for electromagnetic transmission of data through rocks, in particular from the bottom of a hole being drilled |
-
1944
- 1944-02-28 FR FR906522D patent/FR906522A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2621073A1 (en) * | 1987-09-28 | 1989-03-31 | Alsthom | System for electromagnetic transmission of data through rocks, in particular from the bottom of a hole being drilled |
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