KR900011027U - CO Line Security Device - Google Patents

CO Line Security Device

Info

Publication number
KR900011027U
KR900011027U KR2019880019131U KR880019131U KR900011027U KR 900011027 U KR900011027 U KR 900011027U KR 2019880019131 U KR2019880019131 U KR 2019880019131U KR 880019131 U KR880019131 U KR 880019131U KR 900011027 U KR900011027 U KR 900011027U
Authority
KR
South Korea
Prior art keywords
security device
line security
line
security
Prior art date
Application number
KR2019880019131U
Other languages
Korean (ko)
Other versions
KR910004599Y1 (en
Inventor
안평래
Original Assignee
안평래
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 안평래 filed Critical 안평래
Priority to KR2019880019131U priority Critical patent/KR910004599Y1/en
Publication of KR900011027U publication Critical patent/KR900011027U/en
Application granted granted Critical
Publication of KR910004599Y1 publication Critical patent/KR910004599Y1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/74—Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults
    • H04M1/745—Protection devices or circuits for voltages surges on the line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/80—Electronic components, circuits, software, systems or apparatus used in telephone systems line protection circuits such as current or overvoltage protection circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Emergency Protection Circuit Devices (AREA)
KR2019880019131U 1988-11-26 1988-11-26 Device for protecting trunk lines KR910004599Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019880019131U KR910004599Y1 (en) 1988-11-26 1988-11-26 Device for protecting trunk lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019880019131U KR910004599Y1 (en) 1988-11-26 1988-11-26 Device for protecting trunk lines

Publications (2)

Publication Number Publication Date
KR900011027U true KR900011027U (en) 1990-06-04
KR910004599Y1 KR910004599Y1 (en) 1991-06-29

Family

ID=19281601

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019880019131U KR910004599Y1 (en) 1988-11-26 1988-11-26 Device for protecting trunk lines

Country Status (1)

Country Link
KR (1) KR910004599Y1 (en)

Also Published As

Publication number Publication date
KR910004599Y1 (en) 1991-06-29

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Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
NORF Unpaid initial registration fee