KR880020362U - 자석을 이용한 경보장치 - Google Patents

자석을 이용한 경보장치

Info

Publication number
KR880020362U
KR880020362U KR2019870005325U KR870005325U KR880020362U KR 880020362 U KR880020362 U KR 880020362U KR 2019870005325 U KR2019870005325 U KR 2019870005325U KR 870005325 U KR870005325 U KR 870005325U KR 880020362 U KR880020362 U KR 880020362U
Authority
KR
South Korea
Prior art keywords
alarm system
magnetic alarm
magnetic
alarm
Prior art date
Application number
KR2019870005325U
Other languages
English (en)
Other versions
KR900010445Y1 (ko
Inventor
김재한
Original Assignee
김재한
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 김재한 filed Critical 김재한
Priority to KR2019870005325U priority Critical patent/KR900010445Y1/ko
Publication of KR880020362U publication Critical patent/KR880020362U/ko
Application granted granted Critical
Publication of KR900010445Y1 publication Critical patent/KR900010445Y1/ko

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/08—Mechanical actuation by opening, e.g. of door, of window, of drawer, of shutter, of curtain, of blind

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Burglar Alarm Systems (AREA)
KR2019870005325U 1987-04-14 1987-04-14 자석을 이용한 경보장치 KR900010445Y1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019870005325U KR900010445Y1 (ko) 1987-04-14 1987-04-14 자석을 이용한 경보장치

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019870005325U KR900010445Y1 (ko) 1987-04-14 1987-04-14 자석을 이용한 경보장치

Publications (2)

Publication Number Publication Date
KR880020362U true KR880020362U (ko) 1988-11-30
KR900010445Y1 KR900010445Y1 (ko) 1990-11-17

Family

ID=19261718

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019870005325U KR900010445Y1 (ko) 1987-04-14 1987-04-14 자석을 이용한 경보장치

Country Status (1)

Country Link
KR (1) KR900010445Y1 (ko)

Also Published As

Publication number Publication date
KR900010445Y1 (ko) 1990-11-17

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Legal Events

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E902 Notification of reason for refusal
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
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FPAY Annual fee payment

Payment date: 20001218

Year of fee payment: 12

EXPY Expiration of term