JPH02128978U - - Google Patents
Info
- Publication number
- JPH02128978U JPH02128978U JP3748089U JP3748089U JPH02128978U JP H02128978 U JPH02128978 U JP H02128978U JP 3748089 U JP3748089 U JP 3748089U JP 3748089 U JP3748089 U JP 3748089U JP H02128978 U JPH02128978 U JP H02128978U
- Authority
- JP
- Japan
- Prior art keywords
- underground
- responds
- detection signal
- underground object
- case
- 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
- 239000003550 marker Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims 2
- 229920003002 synthetic resin Polymers 0.000 claims 1
- 239000000057 synthetic resin Substances 0.000 claims 1
Landscapes
- Geophysics And Detection Of Objects (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3748089U JPH02128978U (en]) | 1989-03-30 | 1989-03-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3748089U JPH02128978U (en]) | 1989-03-30 | 1989-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02128978U true JPH02128978U (en]) | 1990-10-24 |
Family
ID=31544629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3748089U Pending JPH02128978U (en]) | 1989-03-30 | 1989-03-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02128978U (en]) |
-
1989
- 1989-03-30 JP JP3748089U patent/JPH02128978U/ja active Pending