JPS4974807A - - Google Patents

Info

Publication number
JPS4974807A
JPS4974807A JP11633372A JP11633372A JPS4974807A JP S4974807 A JPS4974807 A JP S4974807A JP 11633372 A JP11633372 A JP 11633372A JP 11633372 A JP11633372 A JP 11633372A JP S4974807 A JPS4974807 A JP S4974807A
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
JP11633372A
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 JP11633372A priority Critical patent/JPS4974807A/ja
Publication of JPS4974807A publication Critical patent/JPS4974807A/ja
Pending legal-status Critical Current

Links

JP11633372A 1972-11-20 1972-11-20 Pending JPS4974807A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11633372A JPS4974807A (en) 1972-11-20 1972-11-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11633372A JPS4974807A (en) 1972-11-20 1972-11-20

Publications (1)

Publication Number Publication Date
JPS4974807A true JPS4974807A (en) 1974-07-19

Family

ID=14684353

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11633372A Pending JPS4974807A (en) 1972-11-20 1972-11-20

Country Status (1)

Country Link
JP (1) JPS4974807A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59178850A (en) * 1983-03-30 1984-10-11 Fujitsu Ltd System for detecting incoming call
JPS6072053U (en) * 1983-10-24 1985-05-21 富士通株式会社 ringer detection device
JPH036157A (en) * 1989-06-01 1991-01-11 Nec Corp Ringer signal detecting circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59178850A (en) * 1983-03-30 1984-10-11 Fujitsu Ltd System for detecting incoming call
JPS6072053U (en) * 1983-10-24 1985-05-21 富士通株式会社 ringer detection device
JPH036157A (en) * 1989-06-01 1991-01-11 Nec Corp Ringer signal detecting circuit

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