JPS5778322A - Safety circuit for telephone subscriber - Google Patents
Safety circuit for telephone subscriberInfo
- Publication number
- JPS5778322A JPS5778322A JP15307280A JP15307280A JPS5778322A JP S5778322 A JPS5778322 A JP S5778322A JP 15307280 A JP15307280 A JP 15307280A JP 15307280 A JP15307280 A JP 15307280A JP S5778322 A JPS5778322 A JP S5778322A
- Authority
- JP
- Japan
- Prior art keywords
- safety circuit
- telephone subscriber
- subscriber
- telephone
- safety
- 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
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15307280A JPS5778322A (en) | 1980-10-31 | 1980-10-31 | Safety circuit for telephone subscriber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15307280A JPS5778322A (en) | 1980-10-31 | 1980-10-31 | Safety circuit for telephone subscriber |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5778322A true JPS5778322A (en) | 1982-05-17 |
JPS6258221B2 JPS6258221B2 (en) | 1987-12-04 |
Family
ID=15554363
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15307280A Granted JPS5778322A (en) | 1980-10-31 | 1980-10-31 | Safety circuit for telephone subscriber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5778322A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4860507A (en) * | 1971-11-27 | 1973-08-24 | ||
JPS55117429A (en) * | 1979-02-28 | 1980-09-09 | Shiroyama Seisakusho Kk | Safety circuit for telephone subscriber |
-
1980
- 1980-10-31 JP JP15307280A patent/JPS5778322A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4860507A (en) * | 1971-11-27 | 1973-08-24 | ||
JPS55117429A (en) * | 1979-02-28 | 1980-09-09 | Shiroyama Seisakusho Kk | Safety circuit for telephone subscriber |
Also Published As
Publication number | Publication date |
---|---|
JPS6258221B2 (en) | 1987-12-04 |
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