JPH0342814U - - Google Patents
Info
- Publication number
- JPH0342814U JPH0342814U JP10179889U JP10179889U JPH0342814U JP H0342814 U JPH0342814 U JP H0342814U JP 10179889 U JP10179889 U JP 10179889U JP 10179889 U JP10179889 U JP 10179889U JP H0342814 U JPH0342814 U JP H0342814U
- Authority
- JP
- Japan
- Prior art keywords
- rockfall
- alarm
- signal processing
- sensing section
- section
- 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
- 239000000463 material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 description 1
Landscapes
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10179889U JPH0342814U (https=) | 1989-09-01 | 1989-09-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10179889U JPH0342814U (https=) | 1989-09-01 | 1989-09-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0342814U true JPH0342814U (https=) | 1991-04-23 |
Family
ID=31650727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10179889U Pending JPH0342814U (https=) | 1989-09-01 | 1989-09-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0342814U (https=) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4860403A (https=) * | 1971-11-30 | 1973-08-24 |
-
1989
- 1989-09-01 JP JP10179889U patent/JPH0342814U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4860403A (https=) * | 1971-11-30 | 1973-08-24 |
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