KR860013904U - Security device for communication - Google Patents

Security device for communication

Info

Publication number
KR860013904U
KR860013904U KR2019850004290U KR850004290U KR860013904U KR 860013904 U KR860013904 U KR 860013904U KR 2019850004290 U KR2019850004290 U KR 2019850004290U KR 850004290 U KR850004290 U KR 850004290U KR 860013904 U KR860013904 U KR 860013904U
Authority
KR
South Korea
Prior art keywords
communication
security device
security
Prior art date
Application number
KR2019850004290U
Other languages
Korean (ko)
Other versions
KR880000715Y1 (en
Inventor
정흥조
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 KR2019850004290U priority Critical patent/KR880000715Y1/en
Publication of KR860013904U publication Critical patent/KR860013904U/en
Application granted granted Critical
Publication of KR880000715Y1 publication Critical patent/KR880000715Y1/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)
  • Breakers (AREA)
KR2019850004290U 1985-04-17 1985-04-17 Safety device for communication maintenance KR880000715Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019850004290U KR880000715Y1 (en) 1985-04-17 1985-04-17 Safety device for communication maintenance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019850004290U KR880000715Y1 (en) 1985-04-17 1985-04-17 Safety device for communication maintenance

Publications (2)

Publication Number Publication Date
KR860013904U true KR860013904U (en) 1986-11-20
KR880000715Y1 KR880000715Y1 (en) 1988-03-15

Family

ID=19241439

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019850004290U KR880000715Y1 (en) 1985-04-17 1985-04-17 Safety device for communication maintenance

Country Status (1)

Country Link
KR (1) KR880000715Y1 (en)

Also Published As

Publication number Publication date
KR880000715Y1 (en) 1988-03-15

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Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
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
LAPS Lapse due to unpaid annual fee