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
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)
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 (en:Method) | 1974-05-03 |
| FR2201977B1 true FR2201977B1 (en:Method) | 1976-10-01 |
Family
ID=27185540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7335127A Expired FR2201977B1 (en:Method) | 1972-10-07 | 1973-10-02 |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS4993130A (en:Method) |
| DE (1) | DE2349367A1 (en:Method) |
| FR (1) | FR2201977B1 (en:Method) |
Families Citing this family (1)
| 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)
| 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 |
-
1973
- 1973-10-02 DE DE19732349367 patent/DE2349367A1/de active Pending
- 1973-10-02 FR FR7335127A patent/FR2201977B1/fr not_active Expired
- 1973-10-05 JP JP48111595A patent/JPS4993130A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2349367A1 (de) | 1975-04-03 |
| FR2201977A1 (en:Method) | 1974-05-03 |
| JPS4993130A (en:Method) | 1974-09-05 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |