JPH0435472U - - Google Patents
Info
- Publication number
- JPH0435472U JPH0435472U JP7722190U JP7722190U JPH0435472U JP H0435472 U JPH0435472 U JP H0435472U JP 7722190 U JP7722190 U JP 7722190U JP 7722190 U JP7722190 U JP 7722190U JP H0435472 U JPH0435472 U JP H0435472U
- Authority
- JP
- Japan
- Prior art keywords
- intermittent sound
- variable resistor
- earphones
- timer circuit
- period
- 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
Landscapes
- Electromechanical Clocks (AREA)
- Electric Clocks (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7722190U JPH0435472U (2) | 1990-07-20 | 1990-07-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7722190U JPH0435472U (2) | 1990-07-20 | 1990-07-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0435472U true JPH0435472U (2) | 1992-03-25 |
Family
ID=31619406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7722190U Pending JPH0435472U (2) | 1990-07-20 | 1990-07-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0435472U (2) |
-
1990
- 1990-07-20 JP JP7722190U patent/JPH0435472U/ja active Pending
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