JPS62161452U - - Google Patents
Info
- Publication number
- JPS62161452U JPS62161452U JP4930186U JP4930186U JPS62161452U JP S62161452 U JPS62161452 U JP S62161452U JP 4930186 U JP4930186 U JP 4930186U JP 4930186 U JP4930186 U JP 4930186U JP S62161452 U JPS62161452 U JP S62161452U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- acoustic coupler
- detection means
- sound frequency
- frequency signal
- 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 claims description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000004397 blinking Effects 0.000 description 1
Landscapes
- Telephone Set Structure (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4930186U JPS62161452U (en]) | 1986-04-02 | 1986-04-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4930186U JPS62161452U (en]) | 1986-04-02 | 1986-04-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62161452U true JPS62161452U (en]) | 1987-10-14 |
Family
ID=30871623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4930186U Pending JPS62161452U (en]) | 1986-04-02 | 1986-04-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62161452U (en]) |
-
1986
- 1986-04-02 JP JP4930186U patent/JPS62161452U/ja active Pending
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