KR850004803U - Constructor with a semicircular quadrilateral - Google Patents

Constructor with a semicircular quadrilateral

Info

Publication number
KR850004803U
KR850004803U KR2019830010250U KR830010250U KR850004803U KR 850004803 U KR850004803 U KR 850004803U KR 2019830010250 U KR2019830010250 U KR 2019830010250U KR 830010250 U KR830010250 U KR 830010250U KR 850004803 U KR850004803 U KR 850004803U
Authority
KR
South Korea
Prior art keywords
constructor
quadrilateral
semicircular
semicircular quadrilateral
Prior art date
Application number
KR2019830010250U
Other languages
Korean (ko)
Other versions
KR880001960Y1 (en
Inventor
류항기
Original Assignee
류항기
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 류항기 filed Critical 류항기
Priority to KR2019830010250U priority Critical patent/KR880001960Y1/en
Publication of KR850004803U publication Critical patent/KR850004803U/en
Application granted granted Critical
Publication of KR880001960Y1 publication Critical patent/KR880001960Y1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L7/00—Straightedges
    • B43L7/005—Straightedges combined with other drawing aids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
    • B43L13/02—Draughting machines or drawing devices for keeping parallelism
    • B43L13/08—Protractor heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L9/00—Circular curve-drawing or like instruments
    • B43L9/007—Circular curve-drawing or like instruments with perforated or marked rulers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L9/00—Circular curve-drawing or like instruments
    • B43L9/02—Compasses
    • B43L9/04—Beam compasses
KR2019830010250U 1983-11-30 1983-11-30 A measuring ruler KR880001960Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019830010250U KR880001960Y1 (en) 1983-11-30 1983-11-30 A measuring ruler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019830010250U KR880001960Y1 (en) 1983-11-30 1983-11-30 A measuring ruler

Publications (2)

Publication Number Publication Date
KR850004803U true KR850004803U (en) 1985-07-31
KR880001960Y1 KR880001960Y1 (en) 1988-06-03

Family

ID=19232077

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019830010250U KR880001960Y1 (en) 1983-11-30 1983-11-30 A measuring ruler

Country Status (1)

Country Link
KR (1) KR880001960Y1 (en)

Also Published As

Publication number Publication date
KR880001960Y1 (en) 1988-06-03

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Payment date: 19921201

Year of fee payment: 5

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