JPS63187460U - - Google Patents
Info
- Publication number
- JPS63187460U JPS63187460U JP7681987U JP7681987U JPS63187460U JP S63187460 U JPS63187460 U JP S63187460U JP 7681987 U JP7681987 U JP 7681987U JP 7681987 U JP7681987 U JP 7681987U JP S63187460 U JPS63187460 U JP S63187460U
- Authority
- JP
- Japan
- Prior art keywords
- telephone
- terminal
- detects
- detection circuit
- circuit
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987076819U JPH042519Y2 (pl) | 1987-05-23 | 1987-05-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987076819U JPH042519Y2 (pl) | 1987-05-23 | 1987-05-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63187460U true JPS63187460U (pl) | 1988-11-30 |
| JPH042519Y2 JPH042519Y2 (pl) | 1992-01-28 |
Family
ID=30924252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987076819U Expired JPH042519Y2 (pl) | 1987-05-23 | 1987-05-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH042519Y2 (pl) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58207755A (ja) * | 1982-02-09 | 1983-12-03 | Iwatsu Electric Co Ltd | 極性反転検知回路 |
-
1987
- 1987-05-23 JP JP1987076819U patent/JPH042519Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58207755A (ja) * | 1982-02-09 | 1983-12-03 | Iwatsu Electric Co Ltd | 極性反転検知回路 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH042519Y2 (pl) | 1992-01-28 |
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