FR2201977A1 - - Google Patents

Info

Publication number
FR2201977A1
FR2201977A1 FR7335127A FR7335127A FR2201977A1 FR 2201977 A1 FR2201977 A1 FR 2201977A1 FR 7335127 A FR7335127 A FR 7335127A FR 7335127 A FR7335127 A FR 7335127A FR 2201977 A1 FR2201977 A1 FR 2201977A1
Authority
FR
France
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.)
Granted
Application number
FR7335127A
Other languages
French (fr)
Other versions
FR2201977B1 (Direct
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
Priority claimed from IT8627872A external-priority patent/IT970898B/it
Priority claimed from IT6580573A external-priority patent/IT1045977B/it
Application filed by Individual filed Critical Individual
Publication of FR2201977A1 publication Critical patent/FR2201977A1/fr
Application granted granted Critical
Publication of FR2201977B1 publication Critical patent/FR2201977B1/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
    • B43L11/055—Non-circular-curve-drawing instruments for drawing conic sections for drawing ellipses with guides

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drawing Aids And Blackboards (AREA)
FR7335127A 1972-10-07 1973-10-02 Expired FR2201977B1 (Direct)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT8627872A IT970898B (it) 1972-10-07 1972-10-07 Elissografo completo realizzato mediante una squadra girevole ed un pegolo allungabile provvisto di due punte traccianti montate su cursore
IT6580573A IT1045977B (it) 1973-07-05 1973-07-05 Ellissografo completo realizzato mediante una squadra girevole ed un regolo allungabile provvisto di due punte traccianti montate su cursore
DE19732349367 DE2349367A1 (de) 1972-10-07 1973-10-02 Ellipsenzirkel

Publications (2)

Publication Number Publication Date
FR2201977A1 true FR2201977A1 (Direct) 1974-05-03
FR2201977B1 FR2201977B1 (Direct) 1976-10-01

Family

ID=27185540

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7335127A Expired FR2201977B1 (Direct) 1972-10-07 1973-10-02

Country Status (3)

Country Link
JP (1) JPS4993130A (Direct)
DE (1) DE2349367A1 (Direct)
FR (1) FR2201977B1 (Direct)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108407506A (zh) * 2018-03-06 2018-08-17 范科晨 一种多功能教学尺

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB621337A (en) * 1947-02-19 1949-04-07 David Mcdougall Gladstone Improvements relating to appliances for drawing ellipses

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB621337A (en) * 1947-02-19 1949-04-07 David Mcdougall Gladstone Improvements relating to appliances for drawing ellipses

Also Published As

Publication number Publication date
DE2349367A1 (de) 1975-04-03
FR2201977B1 (Direct) 1976-10-01
JPS4993130A (Direct) 1974-09-05

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Legal Events

Date Code Title Description
ST Notification of lapse