JPS6418861U - - Google Patents
Info
- Publication number
- JPS6418861U JPS6418861U JP11328087U JP11328087U JPS6418861U JP S6418861 U JPS6418861 U JP S6418861U JP 11328087 U JP11328087 U JP 11328087U JP 11328087 U JP11328087 U JP 11328087U JP S6418861 U JPS6418861 U JP S6418861U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- detecting means
- speaker
- canceling
- utility
- 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
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11328087U JPS6418861U (zh) | 1987-07-23 | 1987-07-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11328087U JPS6418861U (zh) | 1987-07-23 | 1987-07-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6418861U true JPS6418861U (zh) | 1989-01-30 |
Family
ID=31352972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11328087U Pending JPS6418861U (zh) | 1987-07-23 | 1987-07-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6418861U (zh) |
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1987
- 1987-07-23 JP JP11328087U patent/JPS6418861U/ja active Pending