JPH0425390U - - Google Patents
Info
- Publication number
- JPH0425390U JPH0425390U JP6737190U JP6737190U JPH0425390U JP H0425390 U JPH0425390 U JP H0425390U JP 6737190 U JP6737190 U JP 6737190U JP 6737190 U JP6737190 U JP 6737190U JP H0425390 U JPH0425390 U JP H0425390U
- Authority
- JP
- Japan
- Prior art keywords
- control circuit
- switching means
- telephone
- main device
- closed
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990067371U JP2544242Y2 (ja) | 1990-06-25 | 1990-06-25 | 電話装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990067371U JP2544242Y2 (ja) | 1990-06-25 | 1990-06-25 | 電話装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0425390U true JPH0425390U (id) | 1992-02-28 |
JP2544242Y2 JP2544242Y2 (ja) | 1997-08-13 |
Family
ID=31600887
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1990067371U Expired - Fee Related JP2544242Y2 (ja) | 1990-06-25 | 1990-06-25 | 電話装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2544242Y2 (id) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100386527B1 (ko) * | 1995-12-27 | 2003-08-14 | 주식회사 넷앤텍 | 스피커폰을 이용한 경비실 및 우회통화회로 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63252090A (ja) * | 1987-04-08 | 1988-10-19 | Sekisui Chem Co Ltd | 電話装置 |
-
1990
- 1990-06-25 JP JP1990067371U patent/JP2544242Y2/ja not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63252090A (ja) * | 1987-04-08 | 1988-10-19 | Sekisui Chem Co Ltd | 電話装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100386527B1 (ko) * | 1995-12-27 | 2003-08-14 | 주식회사 넷앤텍 | 스피커폰을 이용한 경비실 및 우회통화회로 |
Also Published As
Publication number | Publication date |
---|---|
JP2544242Y2 (ja) | 1997-08-13 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |