JPH0398552U - - Google Patents
Info
- Publication number
- JPH0398552U JPH0398552U JP744390U JP744390U JPH0398552U JP H0398552 U JPH0398552 U JP H0398552U JP 744390 U JP744390 U JP 744390U JP 744390 U JP744390 U JP 744390U JP H0398552 U JPH0398552 U JP H0398552U
- Authority
- JP
- Japan
- Prior art keywords
- connection device
- external connection
- loop
- line
- detection 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 7
- 230000002265 prevention Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP744390U JPH0644204Y2 (ja) | 1990-01-29 | 1990-01-29 | 共鳴り防止機能付電話回線使用中表示器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP744390U JPH0644204Y2 (ja) | 1990-01-29 | 1990-01-29 | 共鳴り防止機能付電話回線使用中表示器 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0398552U true JPH0398552U (fr) | 1991-10-14 |
JPH0644204Y2 JPH0644204Y2 (ja) | 1994-11-14 |
Family
ID=31511101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP744390U Expired - Lifetime JPH0644204Y2 (ja) | 1990-01-29 | 1990-01-29 | 共鳴り防止機能付電話回線使用中表示器 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0644204Y2 (fr) |
-
1990
- 1990-01-29 JP JP744390U patent/JPH0644204Y2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0644204Y2 (ja) | 1994-11-14 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term |