(under subclass 280) Device including the particular shape, composition, structure or characteristic of the vessel wall or walls adjacent the lining.
(1) Note. The coating of a vessel wall is not sufficient for this subclass unless some cooperating characteristic of the wall is claimed. The characteristic of the wall may be relative denseness or relative heat-absorbing capacity, with respect to the lining, or any other specific cooperating feature as between the wall or walls and the lining.
(2) Note. Specific structural supports between the lining and adjacent wall or walls is included under this subclass.
