FR2201977B1 - - Google Patents

Info

Publication number
FR2201977B1
FR2201977B1 FR7335127A FR7335127A FR2201977B1 FR 2201977 B1 FR2201977 B1 FR 2201977B1 FR 7335127 A FR7335127 A FR 7335127A FR 7335127 A FR7335127 A FR 7335127A FR 2201977 B1 FR2201977 B1 FR 2201977B1
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.)
Expired
Application number
FR7335127A
Other languages
French (fr)
Other versions
FR2201977A1 (enrdf_load_html_response
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 (enrdf_load_html_response)

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 FR2201977A1 (enrdf_load_html_response) 1974-05-03
FR2201977B1 true FR2201977B1 (enrdf_load_html_response) 1976-10-01

Family

ID=27185540

Family Applications (1)

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

Country Status (3)

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

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

Family Cites Families (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
JPS4993130A (enrdf_load_html_response) 1974-09-05
FR2201977A1 (enrdf_load_html_response) 1974-05-03
DE2349367A1 (de) 1975-04-03

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Legal Events

Date Code Title Description
ST Notification of lapse