FR488874A - Elliptical protractor with graduated base - Google Patents

Elliptical protractor with graduated base

Info

Publication number
FR488874A
FR488874A FR488874DA FR488874A FR 488874 A FR488874 A FR 488874A FR 488874D A FR488874D A FR 488874DA FR 488874 A FR488874 A FR 488874A
Authority
FR
France
Prior art keywords
protractor
elliptical
graduated base
graduated
base
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
Michel De Catalano
Erick De Catalano
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 FR488874A publication Critical patent/FR488874A/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
    • B43L11/043—Non-circular-curve-drawing instruments for drawing conic sections for drawing ellipses with stencils
FR488874D 1918-02-09 1918-02-09 Elliptical protractor with graduated base Expired FR488874A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR488874T 1918-02-09

Publications (1)

Publication Number Publication Date
FR488874A true FR488874A (en) 1918-11-21

Family

ID=1525182

Family Applications (1)

Application Number Title Priority Date Filing Date
FR488874D Expired FR488874A (en) 1918-02-09 1918-02-09 Elliptical protractor with graduated base

Country Status (1)

Country Link
FR (1) FR488874A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2622326A (en) * 1945-12-10 1952-12-23 John R Cassell Co Inc Protractor
FR2608513A1 (en) * 1986-12-18 1988-06-24 Chevillard Bernard Instrument for drawing ellipses

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2622326A (en) * 1945-12-10 1952-12-23 John R Cassell Co Inc Protractor
FR2608513A1 (en) * 1986-12-18 1988-06-24 Chevillard Bernard Instrument for drawing ellipses

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