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B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
B29D30/00—Producing pneumatic or solid tyres or parts thereof
B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading
B29D30/68—Cutting profiles into the treads of tyres
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FR974497D1947-12-171948-11-02Dispositif pour le taillage de sillons circulaires anti-dérapants, dans les bandages élastiques pour roues de véhicules
ExpiredFR974497A
(fr)