JPS61109790U - - Google Patents

Info

Publication number
JPS61109790U
JPS61109790U JP19877284U JP19877284U JPS61109790U JP S61109790 U JPS61109790 U JP S61109790U JP 19877284 U JP19877284 U JP 19877284U JP 19877284 U JP19877284 U JP 19877284U JP S61109790 U JPS61109790 U JP S61109790U
Authority
JP
Japan
Prior art keywords
ruler
sides
lined
circumference
circle
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
JP19877284U
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 JP19877284U priority Critical patent/JPS61109790U/ja
Publication of JPS61109790U publication Critical patent/JPS61109790U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Drawing Aids And Blackboards (AREA)
JP19877284U 1984-12-25 1984-12-25 Pending JPS61109790U (US20020193084A1-20021219-M00002.png)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19877284U JPS61109790U (US20020193084A1-20021219-M00002.png) 1984-12-25 1984-12-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19877284U JPS61109790U (US20020193084A1-20021219-M00002.png) 1984-12-25 1984-12-25

Publications (1)

Publication Number Publication Date
JPS61109790U true JPS61109790U (US20020193084A1-20021219-M00002.png) 1986-07-11

Family

ID=30758075

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19877284U Pending JPS61109790U (US20020193084A1-20021219-M00002.png) 1984-12-25 1984-12-25

Country Status (1)

Country Link
JP (1) JPS61109790U (US20020193084A1-20021219-M00002.png)

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