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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B29C66/50
General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
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B29C66/51
Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
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B29C66/53
Joining single elements to tubular articles, hollow articles or bars
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B29C66/534
Joining single elements to open ends of tubular or hollow articles or to the ends of bars
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B29C66/5342
a substantially flat extra element being placed between and clamped by the joined single elements and the end of said tubular or hollow articles
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B29C66/53421
said substantially flat extra element being flexible, e.g. a membrane
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