Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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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
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33/00
Moulds or cores; Details thereof or accessories therefor
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B29C33/38
characterised by the material or the manufacturing process
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B29C33/3842
Manufacturing moulds, e.g. shaping the mould surface by machining
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B29C33/3857
by making impressions of one or more parts of models, e.g. shaped articles and including possible subsequent assembly of the parts
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B29C33/3878
used as masters for making successive impressions
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