JPS60137590U - スチ−ル黒板用補助黒板 - Google Patents

スチ−ル黒板用補助黒板

Info

Publication number
JPS60137590U
JPS60137590U JP2359784U JP2359784U JPS60137590U JP S60137590 U JPS60137590 U JP S60137590U JP 2359784 U JP2359784 U JP 2359784U JP 2359784 U JP2359784 U JP 2359784U JP S60137590 U JPS60137590 U JP S60137590U
Authority
JP
Japan
Prior art keywords
blackboard
sides
steel
auxiliary
circular arc
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
JP2359784U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0234074Y2 (enrdf_load_stackoverflow
Inventor
青井　信二
Original Assignee
株式会社　青井黒板製作所
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 株式会社　青井黒板製作所 filed Critical 株式会社　青井黒板製作所
Priority to JP2359784U priority Critical patent/JPS60137590U/ja
Publication of JPS60137590U publication Critical patent/JPS60137590U/ja
Application granted granted Critical
Publication of JPH0234074Y2 publication Critical patent/JPH0234074Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Drawing Aids And Blackboards (AREA)
JP2359784U 1984-02-21 1984-02-21 スチ−ル黒板用補助黒板 Granted JPS60137590U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2359784U JPS60137590U (ja) 1984-02-21 1984-02-21 スチ−ル黒板用補助黒板

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2359784U JPS60137590U (ja) 1984-02-21 1984-02-21 スチ−ル黒板用補助黒板

Publications (2)

Publication Number Publication Date
JPS60137590U true JPS60137590U (ja) 1985-09-12
JPH0234074Y2 JPH0234074Y2 (enrdf_load_stackoverflow) 1990-09-12

Family

ID=30516972

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2359784U Granted JPS60137590U (ja) 1984-02-21 1984-02-21 スチ−ル黒板用補助黒板

Country Status (1)

Country Link
JP (1) JPS60137590U (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPH0234074Y2 (enrdf_load_stackoverflow) 1990-09-12

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