JPH046401U - - Google Patents
Info
- Publication number
- JPH046401U JPH046401U JP4690890U JP4690890U JPH046401U JP H046401 U JPH046401 U JP H046401U JP 4690890 U JP4690890 U JP 4690890U JP 4690890 U JP4690890 U JP 4690890U JP H046401 U JPH046401 U JP H046401U
- Authority
- JP
- Japan
- Prior art keywords
- sound
- absorbing material
- perforated plate
- building wall
- absorbing
- 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
- 239000011358 absorbing material Substances 0.000 claims description 7
Landscapes
- Building Environments (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4690890U JPH046401U (zh) | 1990-05-07 | 1990-05-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4690890U JPH046401U (zh) | 1990-05-07 | 1990-05-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH046401U true JPH046401U (zh) | 1992-01-21 |
Family
ID=31562387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4690890U Pending JPH046401U (zh) | 1990-05-07 | 1990-05-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH046401U (zh) |
-
1990
- 1990-05-07 JP JP4690890U patent/JPH046401U/ja active Pending