JPH022903U - - Google Patents
Info
- Publication number
- JPH022903U JPH022903U JP7730188U JP7730188U JPH022903U JP H022903 U JPH022903 U JP H022903U JP 7730188 U JP7730188 U JP 7730188U JP 7730188 U JP7730188 U JP 7730188U JP H022903 U JPH022903 U JP H022903U
- Authority
- JP
- Japan
- Prior art keywords
- sound
- sound absorbing
- absorbing
- entrance
- hole
- 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 1
- 238000010586 diagram Methods 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 4
Landscapes
- Building Environments (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7730188U JPH022903U (zh) | 1988-06-13 | 1988-06-13 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7730188U JPH022903U (zh) | 1988-06-13 | 1988-06-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH022903U true JPH022903U (zh) | 1990-01-10 |
Family
ID=31302295
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7730188U Pending JPH022903U (zh) | 1988-06-13 | 1988-06-13 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH022903U (zh) |
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1988
- 1988-06-13 JP JP7730188U patent/JPH022903U/ja active Pending