JPH01151644U - - Google Patents

Info

Publication number
JPH01151644U
JPH01151644U JP4760688U JP4760688U JPH01151644U JP H01151644 U JPH01151644 U JP H01151644U JP 4760688 U JP4760688 U JP 4760688U JP 4760688 U JP4760688 U JP 4760688U JP H01151644 U JPH01151644 U JP H01151644U
Authority
JP
Japan
Prior art keywords
hook
transmission time
receiver
telephone
call
Prior art date
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
JP4760688U
Other languages
English (en)
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 JP4760688U priority Critical patent/JPH01151644U/ja
Publication of JPH01151644U publication Critical patent/JPH01151644U/ja
Pending legal-status Critical Current

Links

Description

【図面の簡単な説明】
第1図は本考案の一実施例を示すブロツク回路
図であり、1点鎖線枠内は従来例部分を示す。 1……受話機、2……フツク、3……バネ、4
……電源回路、5……発信回路、6……発信時間
計測回路、7……受話機はずれ連絡回路。

Claims (1)

    【実用新案登録請求の範囲】
  1. 電話機において未通話時受話機をフツクからは
    ずした時に出る通話可能発信音の発信時間を発信
    時間計測回路にて計測し、発信時間が一定の時間
    になつた場合に受話機はずれ連絡回路を動作させ
    、ユーザーに受話機がはずれていることを警告す
    る事を特徴とする電話機の受話機はずれ警告装置
JP4760688U 1988-04-07 1988-04-07 Pending JPH01151644U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4760688U JPH01151644U (ja) 1988-04-07 1988-04-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4760688U JPH01151644U (ja) 1988-04-07 1988-04-07

Publications (1)

Publication Number Publication Date
JPH01151644U true JPH01151644U (ja) 1989-10-19

Family

ID=31273804

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4760688U Pending JPH01151644U (ja) 1988-04-07 1988-04-07

Country Status (1)

Country Link
JP (1) JPH01151644U (ja)

Similar Documents

Publication Publication Date Title
JPH01151644U (ja)
JPS6415447U (ja)
JPS5871245U (ja) コ−ドレス電話器のモニタ−装置
JPH0188545U (ja)
JPS6347648U (ja)
JPH03459U (ja)
JPH01146653U (ja)
JPH0273852U (ja)
JPH0275856U (ja)
JPS63174756U (ja)
JPS6378461U (ja)
JPS6374850U (ja)
JPH0332853U (ja)
JPH02120947U (ja)
JPS63163040U (ja)
JPS63171043U (ja)
JPH0446742U (ja)
JPH01119242U (ja)
JPH0373059U (ja)
JPH01172735U (ja)
JPS62167441U (ja)
JPH03109461U (ja)
JPS6273657U (ja)
JPH0193849U (ja)
JPH01107252U (ja)