KR870013917U - Security device for communication - Google Patents

Security device for communication

Info

Publication number
KR870013917U
KR870013917U KR2019860002176U KR860002176U KR870013917U KR 870013917 U KR870013917 U KR 870013917U KR 2019860002176 U KR2019860002176 U KR 2019860002176U KR 860002176 U KR860002176 U KR 860002176U KR 870013917 U KR870013917 U KR 870013917U
Authority
KR
South Korea
Prior art keywords
communication
security device
security
Prior art date
Application number
KR2019860002176U
Other languages
Korean (ko)
Other versions
KR890002098Y1 (en
Inventor
정기호
Original Assignee
삼화전기공업 주식회사
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 삼화전기공업 주식회사 filed Critical 삼화전기공업 주식회사
Priority to KR2019860002176U priority Critical patent/KR890002098Y1/en
Publication of KR870013917U publication Critical patent/KR870013917U/en
Application granted granted Critical
Publication of KR890002098Y1 publication Critical patent/KR890002098Y1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/18—Automatic or semi-automatic exchanges with means for reducing interference or noise; with means for reducing effects due to line faults with means for protecting lines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00—Details of spark gaps
    • H01T1/14—Means structurally associated with spark gap for protecting it against overload or for disconnecting it in case of failure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T4/00—Overvoltage arresters using spark gaps
    • H01T4/08—Overvoltage arresters using spark gaps structurally associated with protected apparatus

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Emergency Protection Circuit Devices (AREA)
KR2019860002176U 1986-02-25 1986-02-25 Overvoltage arresters for communication lines KR890002098Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019860002176U KR890002098Y1 (en) 1986-02-25 1986-02-25 Overvoltage arresters for communication lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019860002176U KR890002098Y1 (en) 1986-02-25 1986-02-25 Overvoltage arresters for communication lines

Publications (2)

Publication Number Publication Date
KR870013917U true KR870013917U (en) 1987-09-11
KR890002098Y1 KR890002098Y1 (en) 1989-04-12

Family

ID=19249041

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019860002176U KR890002098Y1 (en) 1986-02-25 1986-02-25 Overvoltage arresters for communication lines

Country Status (1)

Country Link
KR (1) KR890002098Y1 (en)

Also Published As

Publication number Publication date
KR890002098Y1 (en) 1989-04-12

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Legal Events

Date Code Title Description
A201 Request for examination
O032 Opposition [utility model]: request for opposition
E701 Decision to grant or registration of patent right
O071 Decision to grant registration after opposition [utility model]: decision to grant registration
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 19891013

Year of fee payment: 9

LAPS Lapse due to unpaid annual fee