(under the class definition) Processes which impart fraud detecting characteristics to the base, or which make the alteration of indicia which may be applied thereto detectable even though application of such indicia is not claimed.
SEE OR SEARCH CLASS
229, Envelopes, Wrappers, and Paperboard Boxes,
83, for envelopes having sealing flaps containing a dye to indicate unauthorized tampering.
283, Printed Matter,
72+, and indented subclasses, for safety paper or printed matter having fraud preventing characteristics wherein there are structural features other than the coating or impregnant.
