BR7302859D0 - Aperfeicoamentos em sistema de telefone - Google Patents

Aperfeicoamentos em sistema de telefone

Info

Publication number
BR7302859D0
BR7302859D0 BR285973A BR285973A BR7302859D0 BR 7302859 D0 BR7302859 D0 BR 7302859D0 BR 285973 A BR285973 A BR 285973A BR 285973 A BR285973 A BR 285973A BR 7302859 D0 BR7302859 D0 BR 7302859D0
Authority
BR
Brazil
Prior art keywords
phone system
system improvements
phone
Prior art date
Application number
BR285973A
Other languages
English (en)
Portuguese (pt)
Inventor
Hijikata Tokuhisa
Takano Toshiichi
Original Assignee
Iwatsu Electric Co Ltd
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 by Iwatsu Electric Co Ltd filed Critical Iwatsu Electric Co Ltd
Publication of BR7302859D0 publication Critical patent/BR7302859D0/pt

Links

BR285973A 1972-04-19 1973-04-18 Aperfeicoamentos em sistema de telefone BR7302859D0 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3943872A JPS5230083B2 (hu) 1972-04-19 1972-04-19

Publications (1)

Publication Number Publication Date
BR7302859D0 true BR7302859D0 (pt) 1974-07-11

Family

ID=12552995

Family Applications (1)

Application Number Title Priority Date Filing Date
BR285973A BR7302859D0 (pt) 1972-04-19 1973-04-18 Aperfeicoamentos em sistema de telefone

Country Status (2)

Country Link
JP (1) JPS5230083B2 (hu)
BR (1) BR7302859D0 (hu)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5435607Y2 (hu) * 1975-03-10 1979-10-29
JPS5755220Y2 (hu) * 1978-02-16 1982-11-29
JPS5981154U (ja) * 1982-11-22 1984-06-01 大橋　馨 選択発信規制電話装置
JP2710121B2 (ja) * 1987-07-01 1998-02-10 キヤノン株式会社 外線使用制限装置

Also Published As

Publication number Publication date
JPS492411A (hu) 1974-01-10
JPS5230083B2 (hu) 1977-08-05

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