DE307132C - - Google Patents
Info
- Publication number
- DE307132C DE307132C DENDAT307132D DE307132DA DE307132C DE 307132 C DE307132 C DE 307132C DE NDAT307132 D DENDAT307132 D DE NDAT307132D DE 307132D A DE307132D A DE 307132DA DE 307132 C DE307132 C DE 307132C
- Authority
- DE
- Germany
- Prior art keywords
- earth
- resistance
- lines
- switched
- movement mechanism
- 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.)
- Active
Links
- 239000002184 metal Substances 0.000 description 3
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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)
- Locating Faults (AREA)
- Geophysics And Detection Of Objects (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE307132T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE307132C true DE307132C (cs) |
Family
ID=6121343
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT307132D Active DE307132C (cs) | |||
| DENDAT309113D Active DE309113C (cs) |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT309113D Active DE309113C (cs) |
Country Status (1)
| Country | Link |
|---|---|
| DE (2) | DE309113C (cs) |
-
0
- DE DENDAT307132D patent/DE307132C/de active Active
- DE DENDAT309113D patent/DE309113C/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE309113C (cs) |
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