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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
B29C33/00—Moulds or cores; Details thereof or accessories therefor
B29C33/0022—Multi-cavity moulds
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FR679147D1929-06-111929-06-11
Vapor circulation vulcanizing mold for the production of rubber articles
ExpiredFR679147A
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