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Publication of FR912743ApublicationCriticalpatent/FR912743A/fr
B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
B43L1/02—Slates
B—PERFORMING OPERATIONS; TRANSPORTING
B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR912743D1945-07-251945-07-25Perfectionnements aux ardoises d'écoliers et autres
ExpiredFR912743A
(fr)