JPS494962A - - Google Patents
Info
- Publication number
- JPS494962A JPS494962A JP4239872A JP4239872A JPS494962A JP S494962 A JPS494962 A JP S494962A JP 4239872 A JP4239872 A JP 4239872A JP 4239872 A JP4239872 A JP 4239872A JP S494962 A JPS494962 A JP S494962A
- 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
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4239872A JPS494962A (en) | 1972-04-27 | 1972-04-27 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4239872A JPS494962A (en) | 1972-04-27 | 1972-04-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS494962A true JPS494962A (en) | 1974-01-17 |
Family
ID=12634947
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4239872A Pending JPS494962A (en) | 1972-04-27 | 1972-04-27 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS494962A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5228807A (en) * | 1975-08-29 | 1977-03-04 | Meisei Electric Co Ltd | Secret-talk circuit |
JPS52104008A (en) * | 1976-02-27 | 1977-09-01 | Taiko Denki Seisakusho:Kk | Connecting method of button telephone apparatus |
JPS52141104A (en) * | 1976-05-19 | 1977-11-25 | Iwatsu Electric Co Ltd | Private talk system for telephone unit |
JPS5373010A (en) * | 1976-12-13 | 1978-06-29 | Iwatsu Electric Co Ltd | Privacy call circuit of buttom telephon device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3534279A (en) * | 1968-08-12 | 1970-10-13 | Rca Corp | High current transistor amplifier stage operable with low current biasing |
-
1972
- 1972-04-27 JP JP4239872A patent/JPS494962A/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3534279A (en) * | 1968-08-12 | 1970-10-13 | Rca Corp | High current transistor amplifier stage operable with low current biasing |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5228807A (en) * | 1975-08-29 | 1977-03-04 | Meisei Electric Co Ltd | Secret-talk circuit |
JPS5430843B2 (en) * | 1975-08-29 | 1979-10-03 | ||
JPS52104008A (en) * | 1976-02-27 | 1977-09-01 | Taiko Denki Seisakusho:Kk | Connecting method of button telephone apparatus |
JPS5522987B2 (en) * | 1976-02-27 | 1980-06-20 | ||
JPS52141104A (en) * | 1976-05-19 | 1977-11-25 | Iwatsu Electric Co Ltd | Private talk system for telephone unit |
JPS5551375B2 (en) * | 1976-05-19 | 1980-12-24 | ||
JPS5373010A (en) * | 1976-12-13 | 1978-06-29 | Iwatsu Electric Co Ltd | Privacy call circuit of buttom telephon device |
JPS5536224B2 (en) * | 1976-12-13 | 1980-09-19 |