JPH01113489U - - Google Patents
Info
- Publication number
- JPH01113489U JPH01113489U JP10730088U JP10730088U JPH01113489U JP H01113489 U JPH01113489 U JP H01113489U JP 10730088 U JP10730088 U JP 10730088U JP 10730088 U JP10730088 U JP 10730088U JP H01113489 U JPH01113489 U JP H01113489U
- Authority
- JP
- Japan
- Prior art keywords
- duct
- casing
- acoustic transducer
- opening
- sound pressure
- 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
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Headphones And Earphones (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10730088U JPH01113489U (US06294698-20010925-C00026.png) | 1988-08-13 | 1988-08-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10730088U JPH01113489U (US06294698-20010925-C00026.png) | 1988-08-13 | 1988-08-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01113489U true JPH01113489U (US06294698-20010925-C00026.png) | 1989-07-31 |
Family
ID=31341588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10730088U Pending JPH01113489U (US06294698-20010925-C00026.png) | 1988-08-13 | 1988-08-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01113489U (US06294698-20010925-C00026.png) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS508604U (US06294698-20010925-C00026.png) * | 1973-05-22 | 1975-01-29 |
-
1988
- 1988-08-13 JP JP10730088U patent/JPH01113489U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS508604U (US06294698-20010925-C00026.png) * | 1973-05-22 | 1975-01-29 |
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