JPS6171638U - - Google Patents
Info
- Publication number
- JPS6171638U JPS6171638U JP15580484U JP15580484U JPS6171638U JP S6171638 U JPS6171638 U JP S6171638U JP 15580484 U JP15580484 U JP 15580484U JP 15580484 U JP15580484 U JP 15580484U JP S6171638 U JPS6171638 U JP S6171638U
- Authority
- JP
- Japan
- Prior art keywords
- lid
- receiving frame
- manhole cover
- change
- sensor
- 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
- 230000001939 inductive effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Landscapes
- Burglar Alarm Systems (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15580484U JPS6171638U (enExample) | 1984-10-17 | 1984-10-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15580484U JPS6171638U (enExample) | 1984-10-17 | 1984-10-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6171638U true JPS6171638U (enExample) | 1986-05-15 |
Family
ID=30713816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15580484U Pending JPS6171638U (enExample) | 1984-10-17 | 1984-10-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6171638U (enExample) |
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1984
- 1984-10-17 JP JP15580484U patent/JPS6171638U/ja active Pending