JPH02128974U - - Google Patents
Info
- Publication number
- JPH02128974U JPH02128974U JP3747689U JP3747689U JPH02128974U JP H02128974 U JPH02128974 U JP H02128974U JP 3747689 U JP3747689 U JP 3747689U JP 3747689 U JP3747689 U JP 3747689U JP H02128974 U JPH02128974 U JP H02128974U
- Authority
- JP
- Japan
- Prior art keywords
- marker
- valve
- pipe
- detection signal
- response
- 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.)
- Granted
Links
- 239000003550 marker Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims 3
- 235000021168 barbecue Nutrition 0.000 claims 1
- 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 |
|---|---|---|---|
| JP3747689U JPH0714944Y2 (ja) | 1989-03-30 | 1989-03-30 | 地中埋設管のバルブチー探知用標識体 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3747689U JPH0714944Y2 (ja) | 1989-03-30 | 1989-03-30 | 地中埋設管のバルブチー探知用標識体 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02128974U true JPH02128974U (en]) | 1990-10-24 |
| JPH0714944Y2 JPH0714944Y2 (ja) | 1995-04-10 |
Family
ID=31544621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3747689U Expired - Lifetime JPH0714944Y2 (ja) | 1989-03-30 | 1989-03-30 | 地中埋設管のバルブチー探知用標識体 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0714944Y2 (en]) |
-
1989
- 1989-03-30 JP JP3747689U patent/JPH0714944Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0714944Y2 (ja) | 1995-04-10 |