BR7302859D0 - PHONE SYSTEM IMPROVEMENTS - Google Patents

PHONE SYSTEM IMPROVEMENTS

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
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/en

Links

BR285973A 1972-04-19 1973-04-18 PHONE SYSTEM IMPROVEMENTS BR7302859D0 (en)

Applications Claiming Priority (1)

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

Publications (1)

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

Family

ID=12552995

Family Applications (1)

Application Number Title Priority Date Filing Date
BR285973A BR7302859D0 (en) 1972-04-19 1973-04-18 PHONE SYSTEM IMPROVEMENTS

Country Status (2)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5435607Y2 (en) * 1975-03-10 1979-10-29
JPS5755220Y2 (en) * 1978-02-16 1982-11-29
JPS5981154U (en) * 1982-11-22 1984-06-01 大橋　馨 Selective call restriction telephone device
JP2710121B2 (en) * 1987-07-01 1998-02-10 キヤノン株式会社 Outside line use restriction device

Also Published As

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

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