DE228270C - - Google Patents

Info

Publication number
DE228270C
DE228270C DENDAT228270D DE228270DA DE228270C DE 228270 C DE228270 C DE 228270C DE NDAT228270 D DENDAT228270 D DE NDAT228270D DE 228270D A DE228270D A DE 228270DA DE 228270 C DE228270 C DE 228270C
Authority
DE
Germany
Prior art keywords
parabolas
compass
draw
paper
plane
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.)
Active
Application number
DENDAT228270D
Other languages
German (de)
English (en)
Publication of DE228270C publication Critical patent/DE228270C/de
Active 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

Landscapes

  • Diaphragms For Electromechanical Transducers (AREA)
  • Drawing Aids And Blackboards (AREA)
  • Sheet Holders (AREA)
DENDAT228270D Active DE228270C (enrdf_load_html_response)

Publications (1)

Publication Number Publication Date
DE228270C true DE228270C (enrdf_load_html_response)

Family

ID=488671

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT228270D Active DE228270C (enrdf_load_html_response)

Country Status (1)

Country Link
DE (1) DE228270C (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19635333A1 (de) * 1996-07-18 1998-01-29 Khosrow Sadeghi Einrichtung und Verfahren zum variablen Darstellen von Kegelschnitten sowie zum Herstellen derartige Geometrien aufweisende Teile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19635333A1 (de) * 1996-07-18 1998-01-29 Khosrow Sadeghi Einrichtung und Verfahren zum variablen Darstellen von Kegelschnitten sowie zum Herstellen derartige Geometrien aufweisende Teile

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