FR387312A - Compass for ellipses - Google Patents

Compass for ellipses

Info

Publication number
FR387312A
FR387312A FR387312DA FR387312A FR 387312 A FR387312 A FR 387312A FR 387312D A FR387312D A FR 387312DA FR 387312 A FR387312 A FR 387312A
Authority
FR
France
Prior art keywords
ellipses
compass
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
French (fr)
Inventor
Emile Grenier
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
Application granted granted Critical
Publication of FR387312A publication Critical patent/FR387312A/en
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
FR387312D 1908-02-17 1908-02-17 Compass for ellipses Expired FR387312A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR387312T 1908-02-17

Publications (1)

Publication Number Publication Date
FR387312A true FR387312A (en) 1908-07-07

Family

ID=1433059

Family Applications (1)

Application Number Title Priority Date Filing Date
FR387312D Expired FR387312A (en) 1908-02-17 1908-02-17 Compass for ellipses

Country Status (1)

Country Link
FR (1) FR387312A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3104466A (en) * 1962-11-23 1963-09-24 Charles W King Ellipse compass

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3104466A (en) * 1962-11-23 1963-09-24 Charles W King Ellipse compass

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