JPH044992U - - Google Patents
Info
- Publication number
- JPH044992U JPH044992U JP4312990U JP4312990U JPH044992U JP H044992 U JPH044992 U JP H044992U JP 4312990 U JP4312990 U JP 4312990U JP 4312990 U JP4312990 U JP 4312990U JP H044992 U JPH044992 U JP H044992U
- Authority
- JP
- Japan
- Prior art keywords
- attitude
- ground
- transmitting
- receiving means
- vertical direction
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 2
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4312990U JPH044992U (bs) | 1990-04-23 | 1990-04-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4312990U JPH044992U (bs) | 1990-04-23 | 1990-04-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH044992U true JPH044992U (bs) | 1992-01-17 |
Family
ID=31555282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4312990U Pending JPH044992U (bs) | 1990-04-23 | 1990-04-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH044992U (bs) |
-
1990
- 1990-04-23 JP JP4312990U patent/JPH044992U/ja active Pending