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CH178253A - Apparecchio per tracciare elissi. - Google Patents

Apparecchio per tracciare elissi.

Info

Publication number
CH178253A
CH178253A CH178253DA CH178253A CH 178253 A CH178253 A CH 178253A CH 178253D A CH178253D A CH 178253DA CH 178253 A CH178253 A CH 178253A
Authority
CH
Switzerland
Prior art keywords
ellipses
plotting
plotting ellipses
Prior art date
Application number
Other languages
English (en)
Inventor
Ruga Giovanni
Original Assignee
Ruga Giovanni
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 Ruga Giovanni filed Critical Ruga Giovanni
Publication of CH178253A publication Critical patent/CH178253A/it

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)
CH178253D 1934-10-20 1934-10-20 Apparecchio per tracciare elissi. CH178253A (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH178253T 1934-10-20

Publications (1)

Publication Number Publication Date
CH178253A true CH178253A (it) 1935-07-15

Family

ID=4428377

Family Applications (1)

Application Number Title Priority Date Filing Date
CH178253D CH178253A (it) 1934-10-20 1934-10-20 Apparecchio per tracciare elissi.

Country Status (1)

Country Link
CH (1) CH178253A (it)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3032893A (en) * 1961-02-07 1962-05-08 Debeh Ali Educational toy
CN105034654A (zh) * 2015-07-11 2015-11-11 陈有添 椭圆规

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3032893A (en) * 1961-02-07 1962-05-08 Debeh Ali Educational toy
CN105034654A (zh) * 2015-07-11 2015-11-11 陈有添 椭圆规

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