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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B29D
PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
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99/00
Subject matter not provided for in other groups of this subclass
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B29D99/001
Producing wall or panel-like structures, e.g. for hulls, fuselages, or buildings
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B29D99/0021
provided with plain or filled structures, e.g. cores, placed between two or more plates or sheets, e.g. in a matrix
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