Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B32
LAYERED PRODUCTS
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B32B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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29/00
Layered products comprising; a layer of; paper or cardboard
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B32B29/002
as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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B32B29/005
next to another layer of paper or cardboard layer
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