BE347916A - - Google Patents
Info
- Publication number
- BE347916A BE347916A BE347916DA BE347916A BE 347916 A BE347916 A BE 347916A BE 347916D A BE347916D A BE 347916DA BE 347916 A BE347916 A BE 347916A
- Authority
- BE
- Belgium
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
- B43L11/041—Non-circular-curve-drawing instruments for drawing conic sections for drawing ellipses by means of a compass
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB211328A GB291324A (en) | 1928-01-23 | 1928-01-23 | Improved ellipsograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE347916A true BE347916A (en:Method) |
Family
ID=9733834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE347916D BE347916A (en:Method) | 1928-01-23 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE347916A (en:Method) |
| CH (1) | CH131377A (en:Method) |
| FR (1) | FR646998A (en:Method) |
| GB (1) | GB291324A (en:Method) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2493229A (en) * | 1948-08-26 | 1950-01-03 | Dibrell | Instrument for drawing ellipses or the like |
| US2707831A (en) * | 1951-12-18 | 1955-05-10 | Lawrence B Rial | Ellipse-drawing compass |
| IT1228671B (it) * | 1989-03-20 | 1991-07-03 | Ilca Spa | Compasso, particolarmente per disegnatori. |
-
0
- BE BE347916D patent/BE347916A/xx unknown
-
1928
- 1928-01-07 CH CH131377D patent/CH131377A/de unknown
- 1928-01-12 FR FR646998D patent/FR646998A/fr not_active Expired
- 1928-01-23 GB GB211328A patent/GB291324A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH131377A (de) | 1929-02-15 |
| GB291324A (en) | 1928-05-31 |
| FR646998A (fr) | 1928-11-19 |