JPS4912505A - - Google Patents
Info
- Publication number
- JPS4912505A JPS4912505A JP4945172A JP4945172A JPS4912505A JP S4912505 A JPS4912505 A JP S4912505A JP 4945172 A JP4945172 A JP 4945172A JP 4945172 A JP4945172 A JP 4945172A JP S4912505 A JPS4912505 A JP S4912505A
- Authority
- JP
- Japan
- 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
Landscapes
- Train Traffic Observation, Control, And Security (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4945172A JPS4912505A (ja) | 1972-05-18 | 1972-05-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4945172A JPS4912505A (ja) | 1972-05-18 | 1972-05-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4912505A true JPS4912505A (ja) | 1974-02-04 |
Family
ID=12831492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4945172A Pending JPS4912505A (ja) | 1972-05-18 | 1972-05-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS4912505A (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54120503A (en) * | 1978-03-11 | 1979-09-19 | Nippon Telegr & Teleph Corp <Ntt> | Coding system for push-button dial signal |
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1972
- 1972-05-18 JP JP4945172A patent/JPS4912505A/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54120503A (en) * | 1978-03-11 | 1979-09-19 | Nippon Telegr & Teleph Corp <Ntt> | Coding system for push-button dial signal |