JPH01102790U - - Google Patents
Info
- Publication number
- JPH01102790U JPH01102790U JP19787387U JP19787387U JPH01102790U JP H01102790 U JPH01102790 U JP H01102790U JP 19787387 U JP19787387 U JP 19787387U JP 19787387 U JP19787387 U JP 19787387U JP H01102790 U JPH01102790 U JP H01102790U
- Authority
- JP
- Japan
- Prior art keywords
- underground
- underground object
- marker
- detection signal
- arm parts
- 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 6
- 238000001514 detection method Methods 0.000 claims description 3
- 238000009933 burial Methods 0.000 claims 1
Landscapes
- Geophysics And Detection Of Objects (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19787387U JPH01102790U (cs) | 1987-12-25 | 1987-12-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19787387U JPH01102790U (cs) | 1987-12-25 | 1987-12-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01102790U true JPH01102790U (cs) | 1989-07-11 |
Family
ID=31488405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19787387U Pending JPH01102790U (cs) | 1987-12-25 | 1987-12-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01102790U (cs) |
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1987
- 1987-12-25 JP JP19787387U patent/JPH01102790U/ja active Pending