BE347916A - - Google Patents

Info

Publication number: BE347916A
Authority: BE; Belgium

Application number

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.)

1928-01-23

Publication of BE347916A publication Critical patent/BE347916A/xx

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

BE347916D 1928-01-23 BE347916A (xx)

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 (xx)

Family

ID=9733834

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE347916D BE347916A (xx)	1928-01-23

Country Status (4)

Country	Link
BE (1)	BE347916A (xx)
CH (1)	CH131377A (xx)
FR (1)	FR646998A (xx)
GB (1)	GB291324A (xx)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
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
GB291324A (en)	1928-05-31
CH131377A (de)	1929-02-15
FR646998A (fr)	1928-11-19

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