JPS643293U - - Google Patents
Info
- Publication number
- JPS643293U JPS643293U JP9558587U JP9558587U JPS643293U JP S643293 U JPS643293 U JP S643293U JP 9558587 U JP9558587 U JP 9558587U JP 9558587 U JP9558587 U JP 9558587U JP S643293 U JPS643293 U JP S643293U
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- duct
- communicates
- bass reflex
- headphone
- 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
- 230000011514 reflex Effects 0.000 claims 2
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Headphones And Earphones (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9558587U JPS643293U (en]) | 1987-06-22 | 1987-06-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9558587U JPS643293U (en]) | 1987-06-22 | 1987-06-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS643293U true JPS643293U (en]) | 1989-01-10 |
Family
ID=31320266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9558587U Pending JPS643293U (en]) | 1987-06-22 | 1987-06-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS643293U (en]) |
-
1987
- 1987-06-22 JP JP9558587U patent/JPS643293U/ja active Pending
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