.~.~ With dissimilar-sheets sensor (e.g., different sizes or weights) {1}
58.05
.~.~.~ Cover sheet
DEFINITION
Classification: 270/58.05
Cover sheet:
(under subclass 58.04) Subject matter including a special outermost sheet in the pack having a characteristic different from all other sheets in the pack.
SEE OR SEARCH CLASS
53, Package Making,
505+, for a detecting means responsive to presence or absence of a cover material.