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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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66/00
General aspects of processes or apparatus for joining preformed parts
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B29C66/70
characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
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B29C66/72
characterised by the structure of the material of the parts to be joined
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B29C66/723
being multi-layered
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B29C66/7232
comprising a non-plastics layer
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B29C66/72327
consisting of natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
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B29C66/72328
Paper
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