JPH01171694U - - Google Patents

Info

Publication number
JPH01171694U
JPH01171694U JP6816988U JP6816988U JPH01171694U JP H01171694 U JPH01171694 U JP H01171694U JP 6816988 U JP6816988 U JP 6816988U JP 6816988 U JP6816988 U JP 6816988U JP H01171694 U JPH01171694 U JP H01171694U
Authority
JP
Japan
Prior art keywords
ruler
connecting pin
rulers
angled
groove
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.)
Pending
Application number
JP6816988U
Other languages
English (en)
Japanese (ja)
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 filed Critical
Priority to JP6816988U priority Critical patent/JPH01171694U/ja
Publication of JPH01171694U publication Critical patent/JPH01171694U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Drawing Aids And Blackboards (AREA)
JP6816988U 1988-05-25 1988-05-25 Pending JPH01171694U (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6816988U JPH01171694U (ko) 1988-05-25 1988-05-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6816988U JPH01171694U (ko) 1988-05-25 1988-05-25

Publications (1)

Publication Number Publication Date
JPH01171694U true JPH01171694U (ko) 1989-12-05

Family

ID=31293492

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6816988U Pending JPH01171694U (ko) 1988-05-25 1988-05-25

Country Status (1)

Country Link
JP (1) JPH01171694U (ko)

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