JPS5241029A - Device for lifting and lowering blackboard - Google Patents

Device for lifting and lowering blackboard

Info

Publication number
JPS5241029A
JPS5241029A JP11615575A JP11615575A JPS5241029A JP S5241029 A JPS5241029 A JP S5241029A JP 11615575 A JP11615575 A JP 11615575A JP 11615575 A JP11615575 A JP 11615575A JP S5241029 A JPS5241029 A JP S5241029A
Authority
JP
Japan
Prior art keywords
lifting
blackboard
lowering
lowering blackboard
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
JP11615575A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5423620B2 (enExample
Inventor
Mitsuo Kamioka
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
Priority to JP11615575A priority Critical patent/JPS5241029A/ja
Publication of JPS5241029A publication Critical patent/JPS5241029A/ja
Publication of JPS5423620B2 publication Critical patent/JPS5423620B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Drawing Aids And Blackboards (AREA)
JP11615575A 1975-09-25 1975-09-25 Device for lifting and lowering blackboard Granted JPS5241029A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11615575A JPS5241029A (en) 1975-09-25 1975-09-25 Device for lifting and lowering blackboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11615575A JPS5241029A (en) 1975-09-25 1975-09-25 Device for lifting and lowering blackboard

Publications (2)

Publication Number Publication Date
JPS5241029A true JPS5241029A (en) 1977-03-30
JPS5423620B2 JPS5423620B2 (enExample) 1979-08-15

Family

ID=14680119

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11615575A Granted JPS5241029A (en) 1975-09-25 1975-09-25 Device for lifting and lowering blackboard

Country Status (1)

Country Link
JP (1) JPS5241029A (enExample)

Also Published As

Publication number Publication date
JPS5423620B2 (enExample) 1979-08-15

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