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Priority to FR55829ApriorityCriticalpatent/FR1472886A/en
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Publication of FR1472886ApublicationCriticalpatent/FR1472886A/en
B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
B43L7/00—Straightedges
B43L7/10—Plural straightedges relatively movable
FR55829A1966-03-311966-03-31
Measuring and protractor instrument, at predetermined scale, for reproduction and transfer, in particular of drawings
ExpiredFR1472886A
(en)