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Publication of FR966345ApublicationCriticalpatent/FR966345A/en
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
FR966345D1948-05-101948-05-10
Goniometric ruler holder head for so-called <<technigraphs>> devices, which can be oriented from 0 deg. at 360 deg.
ExpiredFR966345A
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