JPS5430842B2 - - Google Patents
Info
- Publication number
- JPS5430842B2 JPS5430842B2 JP10460275A JP10460275A JPS5430842B2 JP S5430842 B2 JPS5430842 B2 JP S5430842B2 JP 10460275 A JP10460275 A JP 10460275A JP 10460275 A JP10460275 A JP 10460275A JP S5430842 B2 JPS5430842 B2 JP S5430842B2
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/68—Circuit arrangements for preventing eavesdropping
- H04M1/70—Lock-out or secrecy arrangements in party-line systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10460275A JPS5228806A (en) | 1975-08-29 | 1975-08-29 | Secret-talk circuit of push-button telephone device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10460275A JPS5228806A (en) | 1975-08-29 | 1975-08-29 | Secret-talk circuit of push-button telephone device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5228806A JPS5228806A (en) | 1977-03-04 |
| JPS5430842B2 true JPS5430842B2 (de) | 1979-10-03 |
Family
ID=14384956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10460275A Granted JPS5228806A (en) | 1975-08-29 | 1975-08-29 | Secret-talk circuit of push-button telephone device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5228806A (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS571487Y2 (de) * | 1977-08-11 | 1982-01-11 | ||
| GB2010242B (en) * | 1977-11-14 | 1982-06-16 | Gen Electric | Alumina calcia baria sealing composition and article of manufacture |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5137374Y2 (de) * | 1971-05-28 | 1976-09-13 |
-
1975
- 1975-08-29 JP JP10460275A patent/JPS5228806A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5228806A (en) | 1977-03-04 |