JPH02128981U - - Google Patents
Info
- Publication number
- JPH02128981U JPH02128981U JP3748389U JP3748389U JPH02128981U JP H02128981 U JPH02128981 U JP H02128981U JP 3748389 U JP3748389 U JP 3748389U JP 3748389 U JP3748389 U JP 3748389U JP H02128981 U JPH02128981 U JP H02128981U
- Authority
- JP
- Japan
- Prior art keywords
- underground
- detection signal
- case
- underground object
- objects
- 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 4
- 238000001514 detection method Methods 0.000 claims description 3
- 229920003002 synthetic resin Polymers 0.000 claims description 2
- 239000000057 synthetic resin Substances 0.000 claims description 2
Landscapes
- Geophysics And Detection Of Objects (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3748389U JPH02128981U (no) | 1989-03-30 | 1989-03-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3748389U JPH02128981U (no) | 1989-03-30 | 1989-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02128981U true JPH02128981U (no) | 1990-10-24 |
Family
ID=31544635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3748389U Pending JPH02128981U (no) | 1989-03-30 | 1989-03-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02128981U (no) |
-
1989
- 1989-03-30 JP JP3748389U patent/JPH02128981U/ja active Pending