JPH03450U - - Google Patents
Info
- Publication number
- JPH03450U JPH03450U JP14710989U JP14710989U JPH03450U JP H03450 U JPH03450 U JP H03450U JP 14710989 U JP14710989 U JP 14710989U JP 14710989 U JP14710989 U JP 14710989U JP H03450 U JPH03450 U JP H03450U
- Authority
- JP
- Japan
- Prior art keywords
- incoming call
- circuit
- signal
- incoming
- arrival
- 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 12
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Prepayment Telephone Systems (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14710989U JPH0614540Y2 (ja) | 1989-02-21 | 1989-12-22 | 公衆電話機の着信回路 |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1903589 | 1989-02-21 | ||
| JP1-19035 | 1989-02-21 | ||
| JP14710989U JPH0614540Y2 (ja) | 1989-02-21 | 1989-12-22 | 公衆電話機の着信回路 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03450U true JPH03450U (pt) | 1991-01-07 |
| JPH0614540Y2 JPH0614540Y2 (ja) | 1994-04-13 |
Family
ID=31717410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14710989U Expired - Lifetime JPH0614540Y2 (ja) | 1989-02-21 | 1989-12-22 | 公衆電話機の着信回路 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0614540Y2 (pt) |
-
1989
- 1989-12-22 JP JP14710989U patent/JPH0614540Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0614540Y2 (ja) | 1994-04-13 |