FR574659A - Appareil à tracer les ellipses - Google Patents

Appareil à tracer les ellipses

Info

Publication number: FR574659A
Authority: FR; France
Prior art keywords: ellipses; tracing; tracing ellipses
Prior art date: 1923-03-08
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

Inventor

Vivant Develay

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.)

1923-03-08

Filing date

1923-03-08

Publication date

1924-07-17

1923-03-08 Application filed filed Critical

1924-07-17 Application granted granted Critical

1924-07-17 Publication of FR574659A publication Critical patent/FR574659A/fr

Status Expired legal-status Critical Current

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
- B43L11/055—Non-circular-curve-drawing instruments for drawing conic sections for drawing ellipses with guides

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)

FR574659D 1923-03-08 1923-03-08 Appareil à tracer les ellipses Expired FR574659A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR574659T		1923-03-08

Publications (1)

Publication Number	Publication Date
FR574659A true FR574659A (fr)	1924-07-17

Family

ID=8952853

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR574659D Expired FR574659A (fr)	1923-03-08	1923-03-08	Appareil à tracer les ellipses

Country Status (1)

Country	Link
FR (1)	FR574659A (fr)

1923
- 1923-03-08 FR FR574659D patent/FR574659A/fr not_active Expired

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