KR900017608U - 전자 경보장치 - Google Patents

전자 경보장치

Info

Publication number
KR900017608U
KR900017608U KR2019890002701U KR890002701U KR900017608U KR 900017608 U KR900017608 U KR 900017608U KR 2019890002701 U KR2019890002701 U KR 2019890002701U KR 890002701 U KR890002701 U KR 890002701U KR 900017608 U KR900017608 U KR 900017608U
Authority
KR
South Korea
Prior art keywords
electronic alarm
alarm
electronic
Prior art date
Application number
KR2019890002701U
Other languages
English (en)
Other versions
KR910006446Y1 (ko
Inventor
문학준
Original Assignee
문학준
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 문학준 filed Critical 문학준
Priority to KR2019890002701U priority Critical patent/KR910006446Y1/ko
Publication of KR900017608U publication Critical patent/KR900017608U/ko
Application granted granted Critical
Publication of KR910006446Y1 publication Critical patent/KR910006446Y1/ko

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
KR2019890002701U 1989-03-09 1989-03-09 전자 경보장치 KR910006446Y1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019890002701U KR910006446Y1 (ko) 1989-03-09 1989-03-09 전자 경보장치

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019890002701U KR910006446Y1 (ko) 1989-03-09 1989-03-09 전자 경보장치

Publications (2)

Publication Number Publication Date
KR900017608U true KR900017608U (ko) 1990-10-05
KR910006446Y1 KR910006446Y1 (ko) 1991-08-23

Family

ID=19284290

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019890002701U KR910006446Y1 (ko) 1989-03-09 1989-03-09 전자 경보장치

Country Status (1)

Country Link
KR (1) KR910006446Y1 (ko)

Also Published As

Publication number Publication date
KR910006446Y1 (ko) 1991-08-23

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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