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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67/00
Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
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B29C67/20
for porous or cellular articles, e.g. of foam plastics, coarse-pored
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B29C67/202
comprising elimination of a solid or a liquid ingredient
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