FR990745A - Perfectionnement aux appareils à dessiner - Google Patents

Perfectionnement aux appareils à dessiner

Info

Publication number
FR990745A
FR990745A FR990745DA FR990745A FR 990745 A FR990745 A FR 990745A FR 990745D A FR990745D A FR 990745DA FR 990745 A FR990745 A FR 990745A
Authority
FR
France
Prior art keywords
improvement
drawing devices
devices
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.)
Expired
Application number
Other languages
English (en)
Inventor
Leon Le Flem
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.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of FR990745A publication Critical patent/FR990745A/fr
Expired 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
    • B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
    • B43L13/02—Draughting machines or drawing devices for keeping parallelism
    • B43L13/04—Guides for rulers
    • B43L13/06—Guides for rulers with pivoted guide rods
FR990745D 1949-05-06 1949-05-06 Perfectionnement aux appareils à dessiner Expired FR990745A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR990745T 1949-05-06

Publications (1)

Publication Number Publication Date
FR990745A true FR990745A (fr) 1951-09-25

Family

ID=9546705

Family Applications (1)

Application Number Title Priority Date Filing Date
FR990745D Expired FR990745A (fr) 1949-05-06 1949-05-06 Perfectionnement aux appareils à dessiner

Country Status (1)

Country Link
FR (1) FR990745A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3766651A (en) * 1972-04-17 1973-10-23 E Bullard Drafting head assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3766651A (en) * 1972-04-17 1973-10-23 E Bullard Drafting head assembly

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