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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11/00
Layered products comprising; a layer of; bituminous or tarry substances
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B32B11/04
comprising such; bituminous or tarry; substance 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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