FR1328495A - Perfectionnements aux systèmes de transmission électro-magnétique à travers le sol - Google Patents
Perfectionnements aux systèmes de transmission électro-magnétique à travers le solInfo
- Publication number
- FR1328495A FR1328495A FR895011A FR895011A FR1328495A FR 1328495 A FR1328495 A FR 1328495A FR 895011 A FR895011 A FR 895011A FR 895011 A FR895011 A FR 895011A FR 1328495 A FR1328495 A FR 1328495A
- Authority
- FR
- France
- Prior art keywords
- electro
- ground
- transmission systems
- magnetic transmission
- magnetic
- 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
- H04B3/00—Line transmission systems
- H04B3/60—Systems for communication between relatively movable stations, e.g. for communication with lift
-
- 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)
- Near-Field Transmission Systems (AREA)
- Microwave Amplifiers (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR895011A FR1328495A (fr) | 1962-04-19 | 1962-04-19 | Perfectionnements aux systèmes de transmission électro-magnétique à travers le sol |
US266728A US3283250A (en) | 1962-04-19 | 1963-03-20 | Electromagnetic transmission systems operating below ground surface |
GB14433/63A GB972751A (en) | 1962-04-19 | 1963-04-10 | Improvement in electro-magnetic transmission systems operating below ground surface |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR895011A FR1328495A (fr) | 1962-04-19 | 1962-04-19 | Perfectionnements aux systèmes de transmission électro-magnétique à travers le sol |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1328495A true FR1328495A (fr) | 1963-05-31 |
Family
ID=8777250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR895011A Expired FR1328495A (fr) | 1962-04-19 | 1962-04-19 | Perfectionnements aux systèmes de transmission électro-magnétique à travers le sol |
Country Status (3)
Country | Link |
---|---|
US (1) | US3283250A (fr) |
FR (1) | FR1328495A (fr) |
GB (1) | GB972751A (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040048596A1 (en) * | 2002-09-10 | 2004-03-11 | Nortel Networks Limited | Method and apparatus for extending high bandwidth communication services to the edge of the network |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2499195A (en) * | 1946-05-10 | 1950-02-28 | James A Mcniven | Mine communication system |
US2653220A (en) * | 1949-10-21 | 1953-09-22 | Carl A Bays | Electromagnetic wave transmission system |
US2998516A (en) * | 1959-06-22 | 1961-08-29 | Space Electronics Corp | Subsurface relay station apparatus |
-
1962
- 1962-04-19 FR FR895011A patent/FR1328495A/fr not_active Expired
-
1963
- 1963-03-20 US US266728A patent/US3283250A/en not_active Expired - Lifetime
- 1963-04-10 GB GB14433/63A patent/GB972751A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB972751A (en) | 1964-10-14 |
US3283250A (en) | 1966-11-01 |
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