JPS5645540B2 - - Google Patents
Info
- Publication number
- JPS5645540B2 JPS5645540B2 JP15289476A JP15289476A JPS5645540B2 JP S5645540 B2 JPS5645540 B2 JP S5645540B2 JP 15289476 A JP15289476 A JP 15289476A JP 15289476 A JP15289476 A JP 15289476A JP S5645540 B2 JPS5645540 B2 JP S5645540B2
- Authority
- JP
- Japan
- 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
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Architecture (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Waveguides (AREA)
- Near-Field Transmission Systems (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15289476A JPS5377409A (en) | 1976-12-21 | 1976-12-21 | Communication method in tunnel and underground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15289476A JPS5377409A (en) | 1976-12-21 | 1976-12-21 | Communication method in tunnel and underground |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5377409A JPS5377409A (en) | 1978-07-08 |
| JPS5645540B2 true JPS5645540B2 (online.php) | 1981-10-27 |
Family
ID=15550444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15289476A Granted JPS5377409A (en) | 1976-12-21 | 1976-12-21 | Communication method in tunnel and underground |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5377409A (online.php) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4020332Y1 (online.php) * | 1964-11-09 | 1965-07-15 | ||
| JPS5042664U (online.php) * | 1973-08-17 | 1975-04-30 |
-
1976
- 1976-12-21 JP JP15289476A patent/JPS5377409A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5377409A (en) | 1978-07-08 |