JPH02142899U - - Google Patents
Info
- Publication number
- JPH02142899U JPH02142899U JP4871589U JP4871589U JPH02142899U JP H02142899 U JPH02142899 U JP H02142899U JP 4871589 U JP4871589 U JP 4871589U JP 4871589 U JP4871589 U JP 4871589U JP H02142899 U JPH02142899 U JP H02142899U
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- plate
- opening
- edge
- buttfull
- 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
- 238000010521 absorption reaction Methods 0.000 description 1
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4871589U JPH02142899U (fr) | 1989-04-25 | 1989-04-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4871589U JPH02142899U (fr) | 1989-04-25 | 1989-04-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02142899U true JPH02142899U (fr) | 1990-12-04 |
Family
ID=31565777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4871589U Pending JPH02142899U (fr) | 1989-04-25 | 1989-04-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02142899U (fr) |
-
1989
- 1989-04-25 JP JP4871589U patent/JPH02142899U/ja active Pending