JPS63142648U - - Google Patents
Info
- Publication number
- JPS63142648U JPS63142648U JP3564387U JP3564387U JPS63142648U JP S63142648 U JPS63142648 U JP S63142648U JP 3564387 U JP3564387 U JP 3564387U JP 3564387 U JP3564387 U JP 3564387U JP S63142648 U JPS63142648 U JP S63142648U
- Authority
- JP
- Japan
- Prior art keywords
- damper
- ventilation passage
- cylindrical body
- open state
- weight
- 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
- 238000009423 ventilation Methods 0.000 claims description 6
Landscapes
- Air-Flow Control Members (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3564387U JPS63142648U (ro) | 1987-03-11 | 1987-03-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3564387U JPS63142648U (ro) | 1987-03-11 | 1987-03-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63142648U true JPS63142648U (ro) | 1988-09-20 |
Family
ID=30845312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3564387U Pending JPS63142648U (ro) | 1987-03-11 | 1987-03-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63142648U (ro) |
-
1987
- 1987-03-11 JP JP3564387U patent/JPS63142648U/ja active Pending