JPS5430842B2 - - Google Patents

Info

Publication number
JPS5430842B2
JPS5430842B2 JP10460275A JP10460275A JPS5430842B2 JP S5430842 B2 JPS5430842 B2 JP S5430842B2 JP 10460275 A JP10460275 A JP 10460275A JP 10460275 A JP10460275 A JP 10460275A JP S5430842 B2 JPS5430842 B2 JP S5430842B2
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.)
Expired
Application number
JP10460275A
Other languages
Japanese (ja)
Other versions
JPS5228806A (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 JP10460275A priority Critical patent/JPS5228806A/ja
Publication of JPS5228806A publication Critical patent/JPS5228806A/ja
Publication of JPS5430842B2 publication Critical patent/JPS5430842B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/68—Circuit arrangements for preventing eavesdropping
    • H04M1/70—Lock-out or secrecy arrangements in party-line systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP10460275A 1975-08-29 1975-08-29 Secret-talk circuit of push-button telephone device Granted JPS5228806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10460275A JPS5228806A (en) 1975-08-29 1975-08-29 Secret-talk circuit of push-button telephone device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10460275A JPS5228806A (en) 1975-08-29 1975-08-29 Secret-talk circuit of push-button telephone device

Publications (2)

Publication Number Publication Date
JPS5228806A JPS5228806A (en) 1977-03-04
JPS5430842B2 true JPS5430842B2 (ref) 1979-10-03

Family

ID=14384956

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10460275A Granted JPS5228806A (en) 1975-08-29 1975-08-29 Secret-talk circuit of push-button telephone device

Country Status (1)

Country Link
JP (1) JPS5228806A (ref)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS571487Y2 (ref) * 1977-08-11 1982-01-11
GB2010242B (en) * 1977-11-14 1982-06-16 Gen Electric Alumina calcia baria sealing composition and article of manufacture

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5137374Y2 (ref) * 1971-05-28 1976-09-13

Also Published As

Publication number Publication date
JPS5228806A (en) 1977-03-04

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