JPH0436403U - - Google Patents
Info
- Publication number
- JPH0436403U JPH0436403U JP7799590U JP7799590U JPH0436403U JP H0436403 U JPH0436403 U JP H0436403U JP 7799590 U JP7799590 U JP 7799590U JP 7799590 U JP7799590 U JP 7799590U JP H0436403 U JPH0436403 U JP H0436403U
- Authority
- JP
- Japan
- Prior art keywords
- manhole
- spirit level
- receiving frame
- wear
- amount
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims 2
Landscapes
- Length-Measuring Instruments Using Mechanical Means (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7799590U JPH0436403U (en]) | 1990-07-23 | 1990-07-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7799590U JPH0436403U (en]) | 1990-07-23 | 1990-07-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0436403U true JPH0436403U (en]) | 1992-03-26 |
Family
ID=31620882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7799590U Pending JPH0436403U (en]) | 1990-07-23 | 1990-07-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0436403U (en]) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6017402B2 (ja) * | 1981-04-07 | 1985-05-02 | チッソ株式会社 | α−オレフイン重合用触媒成分 |
| JPS621113B2 (en]) * | 1980-06-19 | 1987-01-12 | Nitto Kohki Co | |
| JPS6443603U (en]) * | 1987-09-11 | 1989-03-15 |
-
1990
- 1990-07-23 JP JP7799590U patent/JPH0436403U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS621113B2 (en]) * | 1980-06-19 | 1987-01-12 | Nitto Kohki Co | |
| JPS6017402B2 (ja) * | 1981-04-07 | 1985-05-02 | チッソ株式会社 | α−オレフイン重合用触媒成分 |
| JPS6443603U (en]) * | 1987-09-11 | 1989-03-15 |