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An Entity of Type : prov:Entity, within Data Space : webisa.webdatacommons.org associated with source dataset(s)

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  • A met hod for reading of invisible marking, which comprises applying infrared rays of 2-10 ??m wavelength onto an invisible marking-printed material obtained by the method of any of claims 1-15, to measure the infrared absorptivities of the invisible marking area and other area of said material and identify the information signified by the invisible marking.
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