JPS55139724A - Vacuum switching device - Google Patents
Vacuum switching deviceInfo
- Publication number
- JPS55139724A JPS55139724A JP4661579A JP4661579A JPS55139724A JP S55139724 A JPS55139724 A JP S55139724A JP 4661579 A JP4661579 A JP 4661579A JP 4661579 A JP4661579 A JP 4661579A JP S55139724 A JPS55139724 A JP S55139724A
- Authority
- JP
- Japan
- Prior art keywords
- switching device
- vacuum switching
- vacuum
- switching
- 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.)
- Pending
Links
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4661579A JPS55139724A (en) | 1979-04-18 | 1979-04-18 | Vacuum switching device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4661579A JPS55139724A (en) | 1979-04-18 | 1979-04-18 | Vacuum switching device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55139724A true JPS55139724A (en) | 1980-10-31 |
Family
ID=12752197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4661579A Pending JPS55139724A (en) | 1979-04-18 | 1979-04-18 | Vacuum switching device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55139724A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4910045B1 (en) * | 1969-10-31 | 1974-03-08 | ||
JPS616963A (en) * | 1984-06-21 | 1986-01-13 | Matsushita Electric Ind Co Ltd | Diagnostic device of dtmf reception circuit |
-
1979
- 1979-04-18 JP JP4661579A patent/JPS55139724A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4910045B1 (en) * | 1969-10-31 | 1974-03-08 | ||
JPS616963A (en) * | 1984-06-21 | 1986-01-13 | Matsushita Electric Ind Co Ltd | Diagnostic device of dtmf reception circuit |
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