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B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
B43M—BUREAU ACCESSORIES NOT OTHERWISE PROVIDED FOR
B43M15/00—Drawing-pins, Thumb-tacks
FR435227D1911-10-141911-10-14Système de punaise-pince avec pointe ou crochet pour fixer et suspendre des feuilles de papier, cartes, tissus, etc.
ExpiredFR435227A
(fr)
Utilisation de tissus, de feutres ou de feuilles dans le genre du papier, en carbures d'hydrogène fortement polymérisés, comme membrane de dialyse pour liquides alcalins