JPH0436993Y2 - - Google Patents
Info
- Publication number
- JPH0436993Y2 JPH0436993Y2 JP8813288U JP8813288U JPH0436993Y2 JP H0436993 Y2 JPH0436993 Y2 JP H0436993Y2 JP 8813288 U JP8813288 U JP 8813288U JP 8813288 U JP8813288 U JP 8813288U JP H0436993 Y2 JPH0436993 Y2 JP H0436993Y2
- Authority
- JP
- Japan
- Prior art keywords
- ceiling screen
- working hole
- arm
- hole
- worker
- 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.)
- Expired
Links
- 239000000428 dust Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8813288U JPH0436993Y2 (en]) | 1988-07-01 | 1988-07-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8813288U JPH0436993Y2 (en]) | 1988-07-01 | 1988-07-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH028646U JPH028646U (en]) | 1990-01-19 |
| JPH0436993Y2 true JPH0436993Y2 (en]) | 1992-09-01 |
Family
ID=31312708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8813288U Expired JPH0436993Y2 (en]) | 1988-07-01 | 1988-07-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0436993Y2 (en]) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5117593Y1 (en]) * | 1970-10-02 | 1976-05-12 |
-
1988
- 1988-07-01 JP JP8813288U patent/JPH0436993Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH028646U (en]) | 1990-01-19 |