FR720275A - Instrument pour tracer des ellipses - Google Patents

Instrument pour tracer des ellipses

Info

Publication number
FR720275A
FR720275A FR720275DA FR720275A FR 720275 A FR720275 A FR 720275A FR 720275D A FR720275D A FR 720275DA FR 720275 A FR720275 A FR 720275A
Authority
FR
France
Prior art keywords
instrument
drawing ellipses
ellipses
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.)
Expired
Application number
Other languages
English (en)
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.)
OVAL COMPASS Co
Original Assignee
OVAL COMPASS Co
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 OVAL COMPASS Co filed Critical OVAL COMPASS Co
Application granted granted Critical
Publication of FR720275A publication Critical patent/FR720275A/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L11/00—Non-circular-curve-drawing instruments
    • B43L11/02—Non-circular-curve-drawing instruments for drawing conic sections
    • B43L11/04—Non-circular-curve-drawing instruments for drawing conic sections for drawing ellipses
    • B43L11/045—Non-circular-curve-drawing instruments for drawing conic sections for drawing ellipses with cords or like flexible elements
FR720275D 1931-07-17 1931-07-17 Instrument pour tracer des ellipses Expired FR720275A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR720275T 1931-07-17

Publications (1)

Publication Number Publication Date
FR720275A true FR720275A (fr) 1932-02-17

Family

ID=9092550

Family Applications (1)

Application Number Title Priority Date Filing Date
FR720275D Expired FR720275A (fr) 1931-07-17 1931-07-17 Instrument pour tracer des ellipses

Country Status (2)

Country Link
BE (1) BE381459A (fr)
FR (1) FR720275A (fr)

Also Published As

Publication number Publication date
BE381459A (fr)

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