.~ Cellular material derived from plant or animal source (e.g., wood, cotton, wool, leather, etc.)
DEFINITION
Classification: 428/35.6
Cellular material derived from plant or animal source (e.g., wood, cotton, wool, leather, etc.):
(under subclass 34.1) Article* which contains a cellular material derived from a plant or animal source, but excludes fossilized matter.
(1) Note. Cellular material includes naturally occurring material which still retains a certain amount of the original tissue structure of the plant or animal. Such material includes wood, wool, cotton, bark, cork, leather, hair, etc.
(2) Note. In the absence of information to the contrary, a cellulose, cellulose derivative, or protein is presumed devoid of cell structure unless indicated otherwise.
