KR920002790U - Structure of door visitor detector - Google Patents

Structure of door visitor detector

Info

Publication number
KR920002790U
KR920002790U KR2019900010296U KR900010296U KR920002790U KR 920002790 U KR920002790 U KR 920002790U KR 2019900010296 U KR2019900010296 U KR 2019900010296U KR 900010296 U KR900010296 U KR 900010296U KR 920002790 U KR920002790 U KR 920002790U
Authority
KR
South Korea
Prior art keywords
visitor detector
door visitor
door
detector
visitor
Prior art date
Application number
KR2019900010296U
Other languages
Korean (ko)
Other versions
KR930000949Y1 (en
Inventor
유재웅
Original Assignee
유재웅
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 유재웅 filed Critical 유재웅
Priority to KR2019900010296U priority Critical patent/KR930000949Y1/en
Publication of KR920002790U publication Critical patent/KR920002790U/en
Application granted granted Critical
Publication of KR930000949Y1 publication Critical patent/KR930000949Y1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B7/00—Special arrangements or measures in connection with doors or windows
    • E06B7/28—Other arrangements on doors or windows, e.g. door-plates, windows adapted to carry plants, hooks for window cleaners
    • E06B7/30—Peep-holes; Devices for speaking through; Doors having windows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Closed-Circuit Television Systems (AREA)
KR2019900010296U 1990-07-10 1990-07-10 Door viewer KR930000949Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019900010296U KR930000949Y1 (en) 1990-07-10 1990-07-10 Door viewer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019900010296U KR930000949Y1 (en) 1990-07-10 1990-07-10 Door viewer

Publications (2)

Publication Number Publication Date
KR920002790U true KR920002790U (en) 1992-02-25
KR930000949Y1 KR930000949Y1 (en) 1993-03-02

Family

ID=19301013

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019900010296U KR930000949Y1 (en) 1990-07-10 1990-07-10 Door viewer

Country Status (1)

Country Link
KR (1) KR930000949Y1 (en)

Also Published As

Publication number Publication date
KR930000949Y1 (en) 1993-03-02

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Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 19960816

Year of fee payment: 4

LAPS Lapse due to unpaid annual fee