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
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)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE228270C true DE228270C (cs) |
Family
ID=488671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT228270D Active DE228270C (cs) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE228270C (cs) |
Cited By (1)
| 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 |
-
0
- DE DENDAT228270D patent/DE228270C/de active Active
Cited By (1)
| 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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