FR50622E - Perfectionnements aux appareils à dessiner - Google Patents

Perfectionnements aux appareils à dessiner

Info

Publication number
FR50622E
FR50622E FR50622DA FR50622E FR 50622 E FR50622 E FR 50622E FR 50622D A FR50622D A FR 50622DA FR 50622 E FR50622 E FR 50622E
Authority
FR
France
Prior art keywords
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
Sifflet De Berville
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 FR50622E publication Critical patent/FR50622E/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
    • B43L13/08—Protractor heads
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/56—Gauges for measuring angles or tapers, e.g. conical calipers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR50622D 1939-05-25 1939-05-25 Perfectionnements aux appareils à dessiner Expired FR50622E (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR50622T 1939-05-25

Publications (1)

Publication Number Publication Date
FR50622E true FR50622E (fr) 1941-01-27

Family

ID=8685603

Family Applications (1)

Application Number Title Priority Date Filing Date
FR50622D Expired FR50622E (fr) 1939-05-25 1939-05-25 Perfectionnements aux appareils à dessiner

Country Status (1)

Country Link
FR (1) FR50622E (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4446627A (en) * 1981-09-21 1984-05-08 Bengt Persson Arrangement in angle rulers for improving fixture of an angularly adjustable blade of said rulers to the stock thereof in selected blade positions relative thereto

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4446627A (en) * 1981-09-21 1984-05-08 Bengt Persson Arrangement in angle rulers for improving fixture of an angularly adjustable blade of said rulers to the stock thereof in selected blade positions relative thereto

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