JPS5917971U - 学習具 - Google Patents

学習具

Info

Publication number
JPS5917971U
JPS5917971U JP1983093429U JP9342983U JPS5917971U JP S5917971 U JPS5917971 U JP S5917971U JP 1983093429 U JP1983093429 U JP 1983093429U JP 9342983 U JP9342983 U JP 9342983U JP S5917971 U JPS5917971 U JP S5917971U
Authority
JP
Japan
Prior art keywords
square
horizontal lines
lines
thirds
large number
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP1983093429U
Other languages
English (en)
Japanese (ja)
Other versions
JPS6210152Y2 (enrdf_load_stackoverflow
Inventor
李　安燮
宋　寅九
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of JPS5917971U publication Critical patent/JPS5917971U/ja
Application granted granted Critical
Publication of JPS6210152Y2 publication Critical patent/JPS6210152Y2/ja
Granted legal-status Critical Current

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
    • B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
    • B43L1/04—Blackboards
    • B43L1/10—Writing surfaces thereof

Landscapes

  • Drawing Aids And Blackboards (AREA)
JP1983093429U 1982-07-07 1983-06-20 学習具 Granted JPS5917971U (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR82U5315 1982-07-07
KR2019820005315U KR840001089Y1 (ko) 1982-07-07 1982-07-07 학습용 칠판

Publications (2)

Publication Number Publication Date
JPS5917971U true JPS5917971U (ja) 1984-02-03
JPS6210152Y2 JPS6210152Y2 (enrdf_load_stackoverflow) 1987-03-09

Family

ID=30439225

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1983093429U Granted JPS5917971U (ja) 1982-07-07 1983-06-20 学習具

Country Status (2)

Country Link
JP (1) JPS5917971U (enrdf_load_stackoverflow)
KR (1) KR840001089Y1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020027739A (ko) * 2000-10-04 2002-04-15 서영래 휴대용 아이스 백

Also Published As

Publication number Publication date
KR840000771U (ko) 1984-02-29
JPS6210152Y2 (enrdf_load_stackoverflow) 1987-03-09
KR840001089Y1 (ko) 1984-06-23

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