FR646998A - Compas à tracer des ellipses et des courbes - Google Patents

Compas à tracer des ellipses et des courbes

Info

Publication number
FR646998A
FR646998A FR646998DA FR646998A FR 646998 A FR646998 A FR 646998A FR 646998D A FR646998D A FR 646998DA FR 646998 A FR646998 A FR 646998A
Authority
FR
France
Prior art keywords
compass
curves
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)
French (fr)
Inventor
Johann Gunther
Johannes Saupe
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
Application granted granted Critical
Publication of FR646998A publication Critical patent/FR646998A/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
    • B43L11/041—Non-circular-curve-drawing instruments for drawing conic sections for drawing ellipses by means of a compass
FR646998D 1928-01-23 1928-01-12 Compas à tracer des ellipses et des courbes Expired FR646998A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB211328A GB291324A (en) 1928-01-23 1928-01-23 Improved ellipsograph

Publications (1)

Publication Number Publication Date
FR646998A true FR646998A (fr) 1928-11-19

Family

ID=9733834

Family Applications (1)

Application Number Title Priority Date Filing Date
FR646998D Expired FR646998A (fr) 1928-01-23 1928-01-12 Compas à tracer des ellipses et des courbes

Country Status (4)

Country Link
BE (1) BE347916A (it)
CH (1) CH131377A (it)
FR (1) FR646998A (it)
GB (1) GB291324A (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0391027A2 (en) * 1989-03-20 1990-10-10 ILCA S.p.A. Compass, particularly for draughtsmen

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2493229A (en) * 1948-08-26 1950-01-03 Dibrell Instrument for drawing ellipses or the like
US2707831A (en) * 1951-12-18 1955-05-10 Lawrence B Rial Ellipse-drawing compass

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0391027A2 (en) * 1989-03-20 1990-10-10 ILCA S.p.A. Compass, particularly for draughtsmen
EP0391027A3 (en) * 1989-03-20 1990-11-22 Ilca S.P.A. Compass, particularly for draughtsmen

Also Published As

Publication number Publication date
GB291324A (en) 1928-05-31
CH131377A (de) 1929-02-15
BE347916A (it)

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