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
Application number
JP4239872A
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP4239872A priority Critical patent/JPS494962A/ja
Publication of JPS494962A publication Critical patent/JPS494962A/ja
Pending legal-status Critical Current

Links

JP4239872A 1972-04-27 1972-04-27 Pending JPS494962A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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