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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44/00
Shaping by internal pressure generated in the material, e.g. swelling or foaming; ; Producing porous or cellular expanded plastics articles
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B29C44/3442
Mixing, kneading or conveying the foamable material
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B29C44/3446
Feeding the blowing agent
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B29C44/3457
Feeding the blowing agent in solid form to the plastic material
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