JPS6283688U - - Google Patents

Info

Publication number
JPS6283688U
JPS6283688U JP17355385U JP17355385U JPS6283688U JP S6283688 U JPS6283688 U JP S6283688U JP 17355385 U JP17355385 U JP 17355385U JP 17355385 U JP17355385 U JP 17355385U JP S6283688 U JPS6283688 U JP S6283688U
Authority
JP
Japan
Prior art keywords
ellipse
ruler
curved surface
elliptical
axis
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
JP17355385U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0439038Y2 (https=
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 JP1985173553U priority Critical patent/JPH0439038Y2/ja
Publication of JPS6283688U publication Critical patent/JPS6283688U/ja
Application granted granted Critical
Publication of JPH0439038Y2 publication Critical patent/JPH0439038Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Drawing Aids And Blackboards (AREA)
JP1985173553U 1985-11-13 1985-11-13 Expired JPH0439038Y2 (https=)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1985173553U JPH0439038Y2 (https=) 1985-11-13 1985-11-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985173553U JPH0439038Y2 (https=) 1985-11-13 1985-11-13

Publications (2)

Publication Number Publication Date
JPS6283688U true JPS6283688U (https=) 1987-05-28
JPH0439038Y2 JPH0439038Y2 (https=) 1992-09-11

Family

ID=31111119

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985173553U Expired JPH0439038Y2 (https=) 1985-11-13 1985-11-13

Country Status (1)

Country Link
JP (1) JPH0439038Y2 (https=)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4738104U (https=) * 1971-05-11 1972-12-27

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4738104U (https=) * 1971-05-11 1972-12-27

Also Published As

Publication number Publication date
JPH0439038Y2 (https=) 1992-09-11

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